I use a win2012 server with matomo 。 IIS8 with PHP7.2 MySQL5.5 。one website is working well。
First time install：download matomo from matomo.org，unzip the package in C:/www/piwik …IIS make a new website ，choose C:/www/piwik ,default AppPoll ,connect as Administrator。
It just tell me that 500
you can see it at https://piwik.dabenni.com
please help me ,and tell me how to fix it!