diff --git a/README.md b/README.md
index e0d3f48..695f025 100644
--- a/README.md
+++ b/README.md
@@ -231,8 +231,7 @@ example:
 
 ## Credits
 
-Thank you @TheSafdarAwan for PR #22
+Thanks to 
 
-## TODO
-
-* Make documentation on how to create a plugin
+@TheSafdarAwan for PR #22
+@costowell for PR #32
diff --git a/lua/greyjoy/_extensions/cargo.lua b/lua/greyjoy/_extensions/cargo.lua
index d2ccb0a..e30b832 100644
--- a/lua/greyjoy/_extensions/cargo.lua
+++ b/lua/greyjoy/_extensions/cargo.lua
@@ -14,7 +14,11 @@ local M = {}
 
 M.parse = function(fileinfo)
     if type(fileinfo) ~= "table" then
-        print("[cargo] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy cargo" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/_extensions/docker_compose.lua b/lua/greyjoy/_extensions/docker_compose.lua
index c06d9c3..1da5212 100644
--- a/lua/greyjoy/_extensions/docker_compose.lua
+++ b/lua/greyjoy/_extensions/docker_compose.lua
@@ -23,7 +23,11 @@ local M = {}
 
 M.parse = function(fileinfo)
     if type(fileinfo) ~= "table" then
-        print("[docker_compose] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy docker compose" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/_extensions/generic.lua b/lua/greyjoy/_extensions/generic.lua
index 2dca0ca..ae42643 100644
--- a/lua/greyjoy/_extensions/generic.lua
+++ b/lua/greyjoy/_extensions/generic.lua
@@ -22,7 +22,11 @@ local M = {}
 
 M.parse = function(fileobj)
     if type(fileobj) ~= "table" then
-        print("[generic] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy generic" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/_extensions/init.lua b/lua/greyjoy/_extensions/init.lua
index eeb0044..72bac46 100644
--- a/lua/greyjoy/_extensions/init.lua
+++ b/lua/greyjoy/_extensions/init.lua
@@ -9,7 +9,7 @@ local load_extension = function(name)
     if not ok then
         vim.notify(
             "Unable to require greyjoy._extensions." .. name,
-            vim.lsp.log_levels.ERROR,
+            vim.log.levels.ERROR,
             { title = "Plugin error" }
         )
         return
diff --git a/lua/greyjoy/_extensions/kitchen.lua b/lua/greyjoy/_extensions/kitchen.lua
index d802c8a..bd2acd1 100644
--- a/lua/greyjoy/_extensions/kitchen.lua
+++ b/lua/greyjoy/_extensions/kitchen.lua
@@ -26,7 +26,11 @@ local uv = vim.uv
 
 M.parse = function(fileinfo)
     if type(fileinfo) ~= "table" then
-        print("[kitchen] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy kitchen" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/_extensions/makefile.lua b/lua/greyjoy/_extensions/makefile.lua
index 6a701bd..e8493e6 100644
--- a/lua/greyjoy/_extensions/makefile.lua
+++ b/lua/greyjoy/_extensions/makefile.lua
@@ -14,7 +14,11 @@ local M = {}
 
 M.parse = function(fileinfo)
     if type(fileinfo) ~= "table" then
-        print("[makefile] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy makefile" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/_extensions/vscode_tasks.lua b/lua/greyjoy/_extensions/vscode_tasks.lua
index 6b696fc..c307755 100644
--- a/lua/greyjoy/_extensions/vscode_tasks.lua
+++ b/lua/greyjoy/_extensions/vscode_tasks.lua
@@ -3,7 +3,7 @@ local ok, greyjoy = pcall(require, "greyjoy")
 if not ok then
     vim.notify(
         "This plugin requires greyjoy.nvim (https://github.com/desdic/greyjoy.nvim)",
-        vim.lsp.log_levels.ERROR,
+        vim.log.levels.ERROR,
         { title = "Plugin error" }
     )
     return
@@ -61,7 +61,11 @@ end
 
 M.parse = function(fileinfo)
     if type(fileinfo) ~= "table" then
-        print("[vscode_tasks] fileinfo must be a table")
+        vim.notify(
+            "fileinfo must be a table",
+            vim.log.levels.ERROR,
+            { title = "Greyjoy vscode_tasks" }
+        )
         return {}
     end
 
diff --git a/lua/greyjoy/init.lua b/lua/greyjoy/init.lua
index df33588..800fc6b 100644
--- a/lua/greyjoy/init.lua
+++ b/lua/greyjoy/init.lua
@@ -147,13 +147,13 @@ end
 
 greyjoy.to_buffer = function(command)
     local bufnr = vim.api.nvim_create_buf(false, true)
-    vim.api.nvim_buf_set_option(bufnr, "filetype", "greyjoy")
+    vim.api.nvim_set_option_value("filetype", "greyjoy", { buf = bufnr })
 
     local append_data = function(_, data)
         if data then
-            vim.api.nvim_buf_set_option(bufnr, "modifiable", true)
+            vim.api.nvim_set_option_value("modifiable", true, { buf = bufnr })
             vim.api.nvim_buf_set_lines(bufnr, -1, -1, false, data)
-            vim.api.nvim_buf_set_option(bufnr, "modifiable", false)
+            vim.api.nvim_set_option_value("modifiable", false, { buf = bufnr })
         end
     end
 
@@ -178,8 +178,8 @@ greyjoy.to_buffer = function(command)
         focusable = true,
     }
 
-    vim.api.nvim_buf_set_option(bufnr, "modifiable", false)
-    vim.api.nvim_open_win(bufnr, 1, opts)
+    vim.api.nvim_set_option_value("modifiable", false, { buf = bufnr })
+    vim.api.nvim_open_win(bufnr, true, opts)
 
     local commandstr = table.concat(command.command, " ")
     local shell_command = { greyjoy.default_shell, "-c", commandstr }