diff --git a/.gitignore b/.gitignore
index 3b99cf4..a091e6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ composer.lock
 docs
 vendor
 coverage
-.idea
\ No newline at end of file
+.idea
+.php_cs.cache
\ No newline at end of file
diff --git a/.php_cs.cache b/.php_cs.cache
deleted file mode 100644
index c6affc4..0000000
--- a/.php_cs.cache
+++ /dev/null
@@ -1 +0,0 @@
-{"php":"7.2.19-0ubuntu0.18.04.2","version":"2.15.3:v2.15.3#705490b0f282f21017d73561e9498d2b622ee34c","indent":"    ","lineEnding":"\n","rules":{"blank_line_after_namespace":true,"braces":true,"class_definition":true,"elseif":true,"function_declaration":true,"indentation_type":true,"line_ending":true,"lowercase_constants":true,"lowercase_keywords":true,"method_argument_space":{"ensure_fully_multiline":false},"no_closing_tag":true,"no_spaces_after_function_name":true,"no_spaces_inside_parenthesis":true,"no_trailing_whitespace":true,"no_trailing_whitespace_in_comment":true,"single_blank_line_at_eof":true,"single_class_element_per_statement":{"elements":["property"]},"single_import_per_statement":true,"single_line_after_imports":true,"switch_case_semicolon_to_colon":true,"switch_case_space":true,"visibility_required":true,"encoding":true,"full_opening_tag":true,"array_syntax":{"syntax":"short"},"binary_operator_spaces":{"align_equals":false,"align_double_arrow":false},"cast_spaces":true,"combine_consecutive_unsets":true,"concat_space":{"spacing":"one"},"linebreak_after_opening_tag":true,"no_blank_lines_after_class_opening":true,"no_blank_lines_after_phpdoc":true,"no_extra_consecutive_blank_lines":true,"no_trailing_comma_in_singleline_array":true,"no_whitespace_in_blank_line":true,"no_spaces_around_offset":true,"no_unused_imports":true,"no_useless_else":true,"no_useless_return":true,"no_whitespace_before_comma_in_array":true,"normalize_index_brace":true,"phpdoc_indent":true,"phpdoc_to_comment":true,"phpdoc_trim":true,"single_quote":true,"ternary_to_null_coalescing":true,"trailing_comma_in_multiline_array":true,"trim_array_spaces":true,"blank_line_before_statement":true},"hashes":{"\/tmp\/phpcsfixer_temp.tmp\/src\/Model\/Character.php":3249024362,"\/tmp\/phpcsfixer_temp.tmp\/src\/Api\/AbstractApi.php":347679094}}
\ No newline at end of file
diff --git a/src/Api/AbstractApi.php b/src/Api/AbstractApi.php
index a874011..d02359d 100644
--- a/src/Api/AbstractApi.php
+++ b/src/Api/AbstractApi.php
@@ -44,6 +44,10 @@ public function sendRequest($uri = null, $arguments = null, $async = false)
         return $promise;
     }
 
+    /**
+     * @param null $ids
+     * @return mixed
+     */
     public function get($ids = null)
     {
         $uri = $this->getUri($ids ?? $this->ids);
@@ -60,7 +64,7 @@ public function all()
      * @param array $params
      * @return $this
      */
-    public function where(array $params)
+    public function where(array $params) : self
     {
         if (!isset($this->arguments['query'])) {
             $this->arguments['query'] = [];
@@ -78,12 +82,11 @@ public function where(array $params)
     }
 
     /**
-     * You can set ids and add additional filters and then execute API request
-     *
+     * You can set ids and add additional filters and then execute API requesr
      * @param $ids
      * @return AbstractApi
      */
-    public function whereId($ids)
+    public function whereId($ids) : self
     {
         return $this->where(['id' => $ids]);
     }
@@ -102,7 +105,7 @@ public function raw(string $uri)
      *
      * @return $this
      */
-    public function clear()
+    public function clear() : self
     {
         $this->ids = null;
         $this->arguments['query'] = [];
@@ -114,7 +117,7 @@ public function clear()
      * Get arguments/filters for API
      * @return array
      */
-    public function getArguments()
+    public function getArguments() : array
     {
         return $this->arguments;
     }
@@ -123,9 +126,9 @@ public function getArguments()
      * Set page for request
      *
      * @param int $page
-     * @return $this
+     * @return AbstractApi
      */
-    public function setPage(int $page)
+    public function setPage(int $page) : self
     {
         $this->page = $page;
         $this->where(['page' => $page]);
@@ -135,9 +138,9 @@ public function setPage(int $page)
 
     /**
      * Increment page to simulate pagination
-     * @return $this
+     * @return AbstractApi
      */
-    public function nextPage()
+    public function nextPage() : self
     {
         $this->page++;
         $this->where(['page' => $this->page]);
@@ -147,9 +150,9 @@ public function nextPage()
 
     /**
      * Decrement page to simulate pagination
-     * @return $this
+     * @return AbstractApi
      */
-    public function previousPage()
+    public function previousPage() : self
     {
         /*
          * Minimum page number is 1
@@ -189,9 +192,9 @@ public function getUri($ids = null)
      * Example: whereName('Rick') will internally call where function with argument ['name' => 'Rick']
      * @param $name
      * @param $arguments
-     * @return $this
+     * @return AbstractApi
      */
-    public function __call($name, $arguments)
+    public function __call($name, $arguments) : self
     {
         if (strpos($name, 'where') !== 0) {
             throw new \BadFunctionCallException();
diff --git a/src/Api/Character.php b/src/Api/Character.php
index ef24261..85218a3 100644
--- a/src/Api/Character.php
+++ b/src/Api/Character.php
@@ -30,7 +30,9 @@ public function __construct(Client $client)
      */
     public function getOrigin($id = null)
     {
-        return $this->get($id)->getOrigins();
+        $origin = $this->get($id);
+
+        return $origin->hasErrors() ? $origin : $origin->getOrigins();
     }
 
     /**
@@ -41,15 +43,17 @@ public function getOrigin($id = null)
      */
     public function getLocation($id = null)
     {
-        return $this->get($id)->getLocations();
+        $locations = $this->get($id);
+
+        return $locations->hasErrors() ? $locations : $locations->getLocations();
     }
 
     /**
      * Query to filter dead characters
      *
-     * @return $this
+     * @return Character
      */
-    public function isDead()
+    public function isDead() : self
     {
         $this->where(['status' => 'dead']);
 
@@ -59,9 +63,9 @@ public function isDead()
     /**
      * Query to filter alive characters
      *
-     * @return $this
+     * @return Character
      */
-    public function isAlive()
+    public function isAlive() : self
     {
         $this->where(['status' => 'alive']);
 
@@ -71,9 +75,9 @@ public function isAlive()
     /**
      * Query to filter characters with unknown status
      *
-     * @return $this
+     * @return Character
      */
-    public function isStatusUnknown()
+    public function isStatusUnknown() : self
     {
         $this->where(['status' => 'unknown']);
 
@@ -83,9 +87,9 @@ public function isStatusUnknown()
     /**
      * Query to filter female characters
      *
-     * @return $this
+     * @return Character
      */
-    public function isFemale()
+    public function isFemale() : self
     {
         $this->where(['gender' => 'female']);
 
@@ -95,9 +99,9 @@ public function isFemale()
     /**
      * Query to filter male characters
      *
-     * @return $this
+     * @return Character
      */
-    public function isMale()
+    public function isMale() : self
     {
         $this->where(['gender' => 'male']);
 
@@ -107,9 +111,9 @@ public function isMale()
     /**
      * Query to filter genderless characters
      *
-     * @return $this
+     * @return Character
      */
-    public function isGenderless()
+    public function isGenderless() : self
     {
         $this->where(['gender' => 'genderless']);
 
@@ -119,9 +123,9 @@ public function isGenderless()
     /**
      * Query to filter characters with unknown gender
      *
-     * @return $this
+     * @return Character
      */
-    public function isGenderUnknown()
+    public function isGenderUnknown() : self
     {
         $this->where(['gender' => 'unknown']);
 
diff --git a/src/Api/Episode.php b/src/Api/Episode.php
index 1d895c8..54a4cfa 100644
--- a/src/Api/Episode.php
+++ b/src/Api/Episode.php
@@ -26,6 +26,8 @@ public function __construct(Client $client)
      */
     public function getCharacters($id = null)
     {
-        return $this->get($id)->getCharacters();
+        $episodes = $this->get($id);
+
+        return $episodes->hasErrors() ? $episodes : $episodes->getCharacters();
     }
 }
diff --git a/src/Api/Location.php b/src/Api/Location.php
index e53f554..9180943 100644
--- a/src/Api/Location.php
+++ b/src/Api/Location.php
@@ -27,6 +27,8 @@ public function __construct(Client $client)
      */
     public function getResidents($id = null)
     {
-        return $this->get($id)->getResidents();
+        $locations = $this->get($id);
+
+        return $locations->hasErrors() ? $locations : $locations->getResidents();
     }
 }
diff --git a/src/Model/AbstractModel.php b/src/Model/AbstractModel.php
index 4a00e23..356a569 100644
--- a/src/Model/AbstractModel.php
+++ b/src/Model/AbstractModel.php
@@ -30,12 +30,39 @@ public function __construct($response, $parent)
         $this->info = $this->data['info'] ?? null;
     }
 
-    public function toArray()
+    /**
+     * Check if there was errors on request
+     * @return bool
+     */
+    public function hasErrors(): bool
+    {
+        return $this->response->getStatusCode() >= 400;
+    }
+
+    /**
+     * Get response status code
+     *
+     * @return int
+     */
+    public function getResponseStatusCode(): int
+    {
+        return $this->response->getStatusCode();
+    }
+
+    /**
+     * Get response data
+     * @return array
+     */
+    public function toArray(): array
     {
         return $this->data;
     }
 
-    public function toJson()
+    /**
+     * Get data as json
+     * @return string
+     */
+    public function toJson(): string
     {
         return json_encode($this->data);
     }
@@ -44,7 +71,7 @@ public function toJson()
      * Check if is first page of response
      * @return bool
      */
-    public function isFirstPage()
+    public function isFirstPage(): bool
     {
         if ($this->info && $this->info['prev']) {
             return false;
@@ -58,7 +85,7 @@ public function isFirstPage()
      *
      * @return bool
      */
-    public function isLastPage()
+    public function isLastPage(): bool
     {
         if ($this->info && $this->info['next']) {
             return false;
@@ -71,7 +98,7 @@ public function isLastPage()
      * Get total number of records
      * @return int
      */
-    public function count()
+    public function count(): int
     {
         if ($this->info) {
             return $this->info['count'];
@@ -91,7 +118,7 @@ public function count()
     /** Get total number of pages
      * @return int
      */
-    public function pages()
+    public function pages(): int
     {
         return $this->info['pages'] ?? 1;
     }
@@ -122,6 +149,10 @@ public function next()
         return $this->parent->nextPage()->sendRequest();
     }
 
+    /**
+     * Go to first page
+     * @return mixed
+     */
     public function firstPage()
     {
         if ($this->info) {
@@ -131,6 +162,11 @@ public function firstPage()
         return null;
     }
 
+    /**
+     * Go to desired page
+     * @param int $page
+     * @return mixed
+     */
     public function goToPage(int $page)
     {
         if ($this->info) {
@@ -138,6 +174,10 @@ public function goToPage(int $page)
         }
     }
 
+    /**
+     * Go to last page
+     * @return mixed
+     */
     public function lastPage()
     {
         if ($this->info) {
@@ -146,4 +186,19 @@ public function lastPage()
 
         return null;
     }
+
+    /**
+     * Helper function to get ids from urls
+     * @param array $urls
+     * @return array
+     */
+    public function parseIdsFromUrl(array $urls) : array
+    {
+        $ids = [];
+        foreach ($urls as $url) {
+            $ids[] = substr(strrchr($url, '/'), 1);
+        }
+
+        return $ids;
+    }
 }
diff --git a/src/Model/Character.php b/src/Model/Character.php
index 4084794..aab5846 100644
--- a/src/Model/Character.php
+++ b/src/Model/Character.php
@@ -2,15 +2,17 @@
 
 namespace Zmaglica\RickAndMortyApiWrapper\Model;
 
+use Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi;
+
 class Character extends AbstractModel
 {
     /**
      * Get all locations without running API call. Useful if you want to perform additional filtering.
      *
      * @param bool $removeDuplicates
-     * @return array|\Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi
+     * @return AbstractApi
      */
-    public function locations($removeDuplicates = false)
+    public function locations($removeDuplicates = false) : AbstractApi
     {
         $ids = $this->extractIdsFromResponseBasedOnKey('location', $removeDuplicates);
 
@@ -31,9 +33,9 @@ public function getLocations($removeDuplicates = false)
      * Get all origin locations. Useful if you want to perform additional filtering.
      *
      * @param bool $removeDuplicates
-     * @return array|\Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi
+     * @return AbstractApi
      */
-    public function origins($removeDuplicates = false)
+    public function origins($removeDuplicates = false) : AbstractApi
     {
         $ids = $this->extractIdsFromResponseBasedOnKey('origin', $removeDuplicates);
 
@@ -55,9 +57,9 @@ public function getOrigins($removeDuplicates = false)
      * Get all episodes. Useful if you want to perform additional filtering.
      *
      * @param bool $removeDuplicates
-     * @return \Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi
+     * @return AbstractApi
      */
-    public function episodes($removeDuplicates = false)
+    public function episodes($removeDuplicates = false) : AbstractApi
     {
         $ids = $this->extractIdsFromResponseBasedOnKey('episode', $removeDuplicates);
 
@@ -80,9 +82,8 @@ public function getEpisodes($removeDuplicates = false)
      * @param boolean $removeDuplicates
      * @return array
      */
-    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
+    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates) : array
     {
-        $ids = [];
         $urls = [];
         if ($this->info) {
             $urls = array_column($this->data['results'], $key);
@@ -96,14 +97,6 @@ private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
             $urls = array_unique($urls);
         }
 
-        foreach ($urls as $url) {
-            $ids[] = substr(strrchr($url, '/'), 1);
-            ;
-        }
-        if (!$ids) {
-            return [];
-        }
-
-        return $ids;
+        return $this->parseIdsFromUrl($urls);
     }
 }
diff --git a/src/Model/Episode.php b/src/Model/Episode.php
index 9b643e0..4fa76d7 100644
--- a/src/Model/Episode.php
+++ b/src/Model/Episode.php
@@ -2,14 +2,16 @@
 
 namespace Zmaglica\RickAndMortyApiWrapper\Model;
 
+use Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi;
+
 class Episode extends AbstractModel
 {
     /**
      * Get all characters without running API call. Useful if you want to perform additional filtering.
      * @param bool $removeDuplicates
-     * @return \Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi
+     * @return AbstractApi
      */
-    public function characters($removeDuplicates = false)
+    public function characters($removeDuplicates = false): AbstractApi
     {
         $ids = $this->extractIdsFromResponseBasedOnKey('characters', $removeDuplicates);
 
@@ -32,9 +34,8 @@ public function getCharacters($removeDuplicates = false)
      * @param $removeDuplicates
      * @return array
      */
-    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
+    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates): array
     {
-        $ids = [];
         if ($this->info) {
             $urls = array_column($this->data['results'], $key);
             // flatten array to single one because there can be multiple residents per location
@@ -51,11 +52,6 @@ private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
             $urls = array_unique($urls);
         }
 
-        foreach ($urls as $url) {
-            $ids[] = substr(strrchr($url, '/'), 1);
-            ;
-        }
-
-        return $ids;
+        return $this->parseIdsFromUrl($urls);
     }
 }
diff --git a/src/Model/Location.php b/src/Model/Location.php
index e89304e..22d4899 100644
--- a/src/Model/Location.php
+++ b/src/Model/Location.php
@@ -2,14 +2,16 @@
 
 namespace Zmaglica\RickAndMortyApiWrapper\Model;
 
+use Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi;
+
 class Location extends AbstractModel
 {
     /**
      * Get all location residents without running API call. Useful if you want to perform additional filtering.
      * @param bool $removeDuplicates
-     * @return \Zmaglica\RickAndMortyApiWrapper\Api\AbstractApi
+     * @return AbstractApi
      */
-    public function residents($removeDuplicates = false)
+    public function residents($removeDuplicates = false): AbstractApi
     {
         $ids = $this->extractIdsFromResponseBasedOnKey('residents', $removeDuplicates);
 
@@ -32,9 +34,8 @@ public function getResidents($removeDuplicates = false)
      * @param $removeDuplicates
      * @return array
      */
-    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
+    private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates): array
     {
-        $ids = [];
         if ($this->info) {
             $urls = array_column($this->data['results'], $key);
             // flatten array to single one because there can be multiple residents per location
@@ -51,11 +52,6 @@ private function extractIdsFromResponseBasedOnKey($key, $removeDuplicates)
             $urls = array_unique($urls);
         }
 
-        foreach ($urls as $url) {
-            $ids[] = substr(strrchr($url, '/'), 1);
-            ;
-        }
-
-        return $ids;
+        return $this->parseIdsFromUrl($urls);
     }
 }
diff --git a/src/RickAndMortyApiWrapper.php b/src/RickAndMortyApiWrapper.php
index bbe48e0..de1d2c6 100644
--- a/src/RickAndMortyApiWrapper.php
+++ b/src/RickAndMortyApiWrapper.php
@@ -21,6 +21,7 @@ class RickAndMortyApiWrapper
      */
     private $options = [
         'base_uri' => 'https://rickandmortyapi.com/api/',
+        'http_errors' => false,
     ];
 
     /**
@@ -45,7 +46,7 @@ public function getClient(): Client
      * @param Client $client
      * @return RickAndMortyApiWrapper
      */
-    public function setClient(Client $client): RickAndMortyApiWrapper
+    public function setClient(Client $client): self
     {
         $this->client = $client;
 
@@ -65,7 +66,7 @@ public function getOptions(): array
      * @param array $options
      * @return RickAndMortyApiWrapper
      */
-    public function setOptions(array $options): RickAndMortyApiWrapper
+    public function setOptions(array $options): self
     {
         $this->options = $options;
 
@@ -76,7 +77,7 @@ public function setOptions(array $options): RickAndMortyApiWrapper
      * Wrapper for Character API
      * @return Character
      */
-    public function character()
+    public function character(): Character
     {
         return new Character($this->client);
     }
@@ -85,7 +86,7 @@ public function character()
      * Wrapper for Location API
      * @return Location
      */
-    public function location()
+    public function location(): Location
     {
         return new Location($this->client);
     }
@@ -94,7 +95,7 @@ public function location()
      * Wrapper for Episode API
      * @return Episode
      */
-    public function episode()
+    public function episode(): Episode
     {
         return new Episode($this->client);
     }