[PrestaShopException]

Link to database cannot be established: SQLSTATE[HY000] [1226] User 'keyfirst_eu' has exceeded the 'max_user_connections' resource (current value: 30)
at line 136 in file classes/db/DbPDO.php

131.     public function connect()
132.     {
133.         try {
134.             $this->link = $this->getPDO($this->server, $this->user, $this->password, $this->database, 5);
135.         } catch (PDOException $e) {
136.             throw new PrestaShopException('Link to database cannot be established: ' . $e->getMessage());
137.         }
138. 
139.         $this->link->exec('SET SESSION sql_mode = \'\'');
140. 
141.         return $this->link;