diff --git a/lib/graphql-hive/client.rb b/lib/graphql-hive/client.rb
index e54c53d..9e077d0 100644
--- a/lib/graphql-hive/client.rb
+++ b/lib/graphql-hive/client.rb
@@ -24,6 +24,12 @@ def send(path, body, _log_type)
         request = build_request(uri, body)
         response = http.request(request)
 
+        if response.code.to_i >= 400 && response.code.to_i < 500
+          error_message = "Unsuccessful response: #{response.code} - #{response.message}"
+          extract_error_details(response)&.then { |details| error_message += ": [#{details}]" }
+          @options[:logger].warn(error_message)
+        end
+
         @options[:logger].debug(response.inspect)
         @options[:logger].debug(response.body.inspect)
       rescue => e
@@ -48,6 +54,14 @@ def build_request(uri, body)
         request.body = JSON.generate(body)
         request
       end
+
+      def extract_error_details(response)
+        parsed_body = JSON.parse(response.body)
+        return unless parsed_body.is_a?(Hash) && parsed_body['errors'].is_a?(Array)
+        parsed_body['errors'].map { |error| "path: #{error['path']}, message: #{error['message']}" }.join(", ")
+      rescue JSON::ParserError
+        nil
+      end
     end
   end
 end