Warning: mysqli::__construct(): (HY000/2003): Can't connect to MySQL server on '172.17.0.26' (111) in /var/www/vhosts/196/1060021/webspace/httpdocs/piwigo/include/dblayer/functions_mysqli.inc.php on line 52 Warning: my_error(): Couldn't fetch mysqli in /var/www/vhosts/196/1060021/webspace/httpdocs/piwigo/include/dblayer/functions_mysqli.inc.php on line 839

Piwigo encountered a non recoverable error

[mysql error ] 
Can't connect to server

#1	my_error /var/www/vhosts/196/1060021/webspace/httpdocs/piwigo/include/common.inc.php(124)
#2	include_once /var/www/vhosts/196/1060021/webspace/httpdocs/piwigo/index.php(11)