Projeqtor keeps Losing it's Connection

PHP 7.2 Environment
Debian 9 Apache Server.
Projeqtor Version 7.2.7

Hi, I keep having Projeqtor lose it's connection. Here is details from the web server log:

root@jacob2:/var/www/garethbaileygroup.com/log# tail -40 error.log
[Sun Nov 25 15:23:46.178838 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: PHP Warning: session_start(): Failed to decode session object. Session has been destroyed in /var/www/clients/client1/web3/web/workflow/projeqtor/tool/projeqtor.php on line 39
[Sun Nov 25 15:23:46.178872 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: PHP Fatal error: Uncaught Error: Call to undefined function htmlGetErrorMessage() in /var/www/clients/client1/web3/web/workflow/projeqtor/model/persistence/Sql.php:272
[Sun Nov 25 15:23:46.178880 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: Stack trace:
[Sun Nov 25 15:23:46.178887 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #0 /var/www/clients/client1/web3/web/workflow/projeqtor/model/persistence/Sql.php(84): Sql::getConnection()
[Sun Nov 25 15:23:46.178893 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #1 /var/www/clients/client1/web3/web/workflow/projeqtor/model/persistence/SqlElement.php(2371): Sql::query('select * from p...')
[Sun Nov 25 15:23:46.178900 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #2 /var/www/clients/client1/web3/web/workflow/projeqtor/model/Parameter.php(982): SqlElement->getSqlElementsFromCriteria(NULL, false, ' (idUser is nul...')
[Sun Nov 25 15:23:46.178907 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #3 /var/www/clients/client1/web3/web/workflow/projeqtor/tool/projeqtor.php(2308): Parameter::getGlobalParameter('logLevel')
[Sun Nov 25 15:23:46.178914 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #4 /var/www/clients/client1/web3/web/workflow/projeqtor/tool/projeqtor.php(2422): logTracing('Impossible to l...', 1)
[Sun Nov 25 15:23:46.178920 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #5 /var/www/clients/client1/web3/web/workflow/projeqtor/tool/projeqtor.php(1435): errorLog('Impossible to l...')
[Sun Nov 25 15:23:46.178927 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #6 [internal function]: projeqtorAutoload('BreadCrumbStack')
[Sun Nov 25 15:23:46.178933 2018] [fcgid:warn] [pid 20262] [client 192.168.1.254:40844] mod_fcgid: stderr: #7 [internal function]: spl_autoload_call('BreadCru in /var/www/clients/client1/web3/web/workflow/projeqtor/model/persistence/Sql.php on line 272

Any help would be greatly appreciated. Any questions, please feel free, anything complicated, please would you give a step by step to either try a fix or provide useful information (that saves ping pong).

Thanks very much,

Kind Regards.

indieben.

Thanks but this has even less info:

2018-11-25 15:24:01.613 ===== TRACE ===== Login error for user 'bgareth'
2018-11-25 15:24:05.770 ===== TRACE ===== NEW CONNECTED USER 'admin'
2018-11-25 15:26:08.287 ===== TRACE ===== NEW CONNECTED USER 'admin'
2018-11-25 15:29:27.661 ===== TRACE ===== NEW CONNECTED USER 'admin'
2018-11-25 15:30:14.908 ===== TRACE ===== NEW CONNECTED USER 'admin'

After some time i'd say. At first I thought it was after some inactivity (i.e. a few minutes) but I had to select a few things fairly quickly and it still kicked me off.

I'm not having any other issues like this across the domain though. Just in case, do you have a list of any necessary and preferable PHP mods that need to be installed? I'd be more than happy to double check all the necessary mods are installed for PHP 7.2. Thanks