Cisco Mobility Express template

[NazgulNr5]

Hi there,
I'm kinda new to Cacti. With my old company I only had to apply one standard template so my experience with templates is rather limited.
Now I need to set up Cacti for a very different network.
I'd like to monitor Cisco Mobility Express APs. I found a template for a WLC (viewtopic.php?t=43852) but as it's for an older cacti version I'm getting errors:

2020-09-07 14:35:04 - CMDPHP PHP ERROR Backtrace: (CactiShutdownHandler())
2020-09-07 14:35:04 - ERROR PHP ERROR: Uncaught Error: Call to undefined function ereg_replace() in /var/www/html/scripts/Cisco_WLC_APs_Assoc.php:60 Stack trace: #0 {main} thrown in file: /var/www/html/scripts/Cisco_WLC_APs_Assoc.php on line: 60

Can anyone help me fixing that? Or would it be better to start from scratch and use like a blank template for the current version of Cacti and only match the OIDs I need?

Edit: Fixed that error. Will check if the template now works properly.