Python3 - EasySNMP

I'm trying to get the Python3 EasySNMP module to work..
Keep getting these error's with PIP... does anybody ever got this working?
Must be something in the net-snmp implementation.

Running:
Openwrt: 18.06.8
python 3.6
snmpd (5.8-1)
snmp-utils (5.8-1)

Error
Screenshot 2020-07-22 at 16.11.48