Prestashop Link to database cannot be established: SQLSTATE[HY000] [1226] - prestashop-1.7

Question

I get an ERROR 500 when trying to access the BackOffice of my prestahsop, I can only enter with Debug mode on.
My hosting provider told me I should close connections on the script, but I don't know what to insert or modify to which script.
[PrestaShopException]
Link to database cannot be established: SQLSTATE[HY000] [1226] User 'u488328531_pcFsK' has exceeded the 'max_user_connections' resource (current value: 15)
at line 127 in file classes/db/DbPDO.php
122. public function connect()
123. {
124. try {
125. $this->link = $this->getPDO($this->server, $this->user, $this->password, $this->database, 5);
126. } catch (PDOException $e) {
127. throw new PrestaShopException('Link to database cannot be established: ' . $e->getMessage());
128. }
129.
130. $this->link->exec('SET SESSION sql_mode = \'\'');
131.
132. return $this->link;
DbPDOCore->connect - [line 330 - classes/db/Db.php]
DbCore->__construct - [line 241 - classes/db/Db.php] - [4 Arguments]
DbCore::getInstance - [line 47 - config/alias.php]
pSQL - [line 340 - classes/shop/Shop.php] - [1 Arguments]
ShopCore::initialize - [line 119 - config/config.inc.php]
require - [line 40 - admin/index.php] - [1 Arguments]enter code here

Answer 1

Same issue here
5 years of work down the drain with prestashop
[PrestaShopException]
Link to database cannot be established: SQLSTATE[08004] [1040] Too many connections
at line 127 in file classes/db/DbPDO.php
public function connect()
{
try {
$this->link = $this->getPDO($this->server, $this->user, $this->password, $this->database, 5);
} catch (PDOException $e) {
127. throw new PrestaShopException('Link to database cannot be established: ' . $e->getMessage());
}
$this->link->exec('SET SESSION sql_mode = \'\'');
return $this->link;
DbPDOCore->connect - [line 330 - classes/db/Db.php]
DbCore->__construct - [line 241 - classes/db/Db.php] - [4 Arguments]
DbCore::getInstance - [line 47 - config/alias.php]
pSQL - [line 340 - classes/shop/Shop.php] - [1 Arguments]
ShopCore::initialize - [line 119 - config/config.inc.php]
require - [line 27 - index.php] - [1 Arguments]