Fatal error: Uncaught Error: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strpos() in /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/symfony/polyfill-mbstring/Mbstring.php:500 Stack trace: #0 /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/symfony/polyfill-mbstring/bootstrap.php(34): Symfony\Polyfill\Mbstring\Mbstring::mb_strpos(NULL, '/json', 0, 'UTF-8') #1 /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/laravel/framework/src/Illuminate/Support/Str.php(107): mb_strpos(NULL, '/json') #2 /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/laravel/framework/src/Illuminate/Http/Concerns/InteractsWithContentTypes.php(34): Illuminate\Support\Str::contains(NULL, Array) #3 /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/laravel/framework/src/Illuminate/Http/Request.php(353): Illuminate\Http\Request->isJson() #4 /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/laravel/framework/src/Illuminate/Http/Request.php(419): Illuminate\Http\Request->getInputSource() #5 /disk1/finger in /disk1/fingergi/laravel_cores/bibinibaa_jw4c93dx/vendor/symfony/polyfill-mbstring/Mbstring.php on line 500