luceos Thanks for your reply. Now I added php_value display_errors 1 this code to my .htaccess file to see error and now it showed me this can you tell me what to do now?
Warning: Wrong COM_STMT_PREPARE response size. Received 7 in /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/database/Connectors/MySqlConnector.php on line 56
Fatal error: Uncaught Error: Call to a member function execute() on boolean in /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/database/Connectors/MySqlConnector.php:56 Stack trace: #0 /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/database/Connectors/ConnectionFactory.php(60): Illuminate\Database\Connectors\MySqlConnector->connect(Array) #1 /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/database/Connectors/ConnectionFactory.php(49): Illuminate\Database\Connectors\ConnectionFactory->createSingleConnection(Array) #2 /storage/ssd4/340/2526340/public_html/flarum/vendor/flarum/core/src/Core/DatabaseServiceProvider.php(32): Illuminate\Database\Connectors\ConnectionFactory->make(Array) #3 /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/container/Container.php(733): Flarum\Core\DatabaseServiceProvider->Flarum\Core{closure}(Object(Flarum\Core\Application), Array) #4 /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/container/Container.php(626): Illuminate in /storage/ssd4/340/2526340/public_html/flarum/vendor/illuminate/database/Connectors/MySqlConnector.php on line 56