Adding compatibility with Laravel 8.x

Author: xBu3n0

src/Database/Connector.php

@@ -12,11 +12,15 @@ public function connect(array $config)
 
         $connection = $this->createConnection($this->getDsn($config), $config, $options);
 
-        if(array_key_exists('charset', $config) && $config['charset'] != '') {
+        if(isset($config['charset'])) {
             $connection->prepare("set char_convert '{$config['charset']}'")->execute();
         }
 
-        $this->configureIsolationLevel($connection, $config);
+        if (isset($config['isolation_level'])) {
+            $connection->prepare(
+                "SET TRANSACTION ISOLATION LEVEL {$config['isolation_level']}"
+            )->execute();
+        }
 
         return $connection;
     }