ISPConfig is a multiserver control panel, so logs are often not on the same server that the GUI is hosted on. To show logs in the GUI, we would have to load them into the ISPConfig MySQL database, which would create a huge database size.
I mean error.log from website, just show in "error" tab. Not need database for this. Like exist in: Monitor>Logfiles
I understand what you mean, but you can't access a log file on a different server and show it in the GUI without loading it into the database. These are in the database.