Warning: mysqli::__construct(): Error while reading greeting packet. PID=18006 in /homepages/1/d16368409/htdocs/uniformen/include/dblayer/functions_mysqli.inc.php on line 52

Warning: mysqli::__construct(): (HY000/2006): MySQL server has gone away in /homepages/1/d16368409/htdocs/uniformen/include/dblayer/functions_mysqli.inc.php on line 52

Warning: my_error(): Couldn't fetch mysqli in /homepages/1/d16368409/htdocs/uniformen/include/dblayer/functions_mysqli.inc.php on line 856

Warning: my_error(): Couldn't fetch mysqli in /homepages/1/d16368409/htdocs/uniformen/include/dblayer/functions_mysqli.inc.php on line 856

Piwigo encountered a non recoverable error

[mysql error ] 
Can't connect to server

#1	my_error /homepages/1/d16368409/htdocs/uniformen/include/common.inc.php(113)
#2	include_once /homepages/1/d16368409/htdocs/uniformen/picture.php(10)