error500 Constant Error 500 - " 136. throw new PrestaShopException('Link to database cannot be established: ' . $e->getMessage()); "

[Lambu]

Hello,

I very often encounter the following Error 500 on my website since a few days (main page and backoffice) :

 

[PrestaShopException]

Link to database cannot be established: SQLSTATE[HY000] [2002] Connection refused
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;

 

Does anyone know why and how I could fix this? 

Thank you very much in advance!!

[Lambu]

up

[JBW]

As you can see the database connection does not work. If you hav not changed anything on the database (password for example) you should ask your hosting provided if the db is up and running

[pinwheel]

JBW is right. Most probably your MYSQL server is going down. This can happen a lot on shared server environments.