Hello there!
The specified OID (1.3.6.1.2.1.1.2.0) is a system OID that generally exists on SNMP-enabled devices and that Lansweeper uses at the start of the SNMP scanning logic to determine whether SNMP is enabled. If 1.3.6.1.2.1.1.2.0 is not accessible on a device or returns no value, scanning SNMP using Lansweeper will fail. There is no workaround for this, as the 1.3.6.1.2.1.1.2.0 check is hardcoded into the scanning service.
More specifically, the device OID (the one you see on the asset page for successfully scanned network devices) is pulled out of 1.3.6.1.2.1.1.2.0 (sysObjectID). In this case, no value is stored here, so these assets return the error "SNMP disabled or wrong community".