Warning: Undefined variable $tags in C:\WebServer\htdocs\bookshelf\storage\framework\views\0ac058cb6dcf11f03503e2f123667e35.php on line 1

Fatal error: Uncaught TypeError: array_merge(): Argument #1 must be of type array, null given in C:\WebServer\htdocs\bookshelf\storage\framework\views\0ac058cb6dcf11f03503e2f123667e35.php:1 Stack trace: #0 C:\WebServer\htdocs\bookshelf\storage\framework\views\0ac058cb6dcf11f03503e2f123667e35.php(1): array_merge(NULL, Array) #1 {main} thrown in C:\WebServer\htdocs\bookshelf\storage\framework\views\0ac058cb6dcf11f03503e2f123667e35.php on line 1