A2Billing advanced troubleshooting
This is intended for advanced users – please see here for general A2Billing troubleshooting tips – https://sysadminman.net/blog/2015/troubleshooting-common-a2billing-problems-6451 Sometimes it can be really useful to figure out what’s going on behind the scenes in A2Billing. This is useful for tracking down bugs. It’s very unlikely you’d want to do this unless you have a good understanding of editing Linux files, PHP and MySQL. To find out what queries A2Billing is running when we look at things in the GUI we can turn on “PHP Quick Profiler” On a SysAdminMan VPS you turn this on by editing the file – /var/www/a2billing/admin/lib/admin.defines.php