Perf-collector errors

I have a number of performance files that are ending up in /var/spool/icinga2/perf-collector/err.

When I check the perf-collector.log I see entries such as

2022-04-15 14:34:13 perf-collector[14017] /var/spool/icinga2/perf-collector/service.1650058449: 8: invalid performance value: 140W VA=150VA

When I check line 8 in that file (now moved under the err/ folder) it shows:

1650058442 hq-pdu-cab01l PDU Status check_apc_ups2 UP HARD OK HARD Watts=140W VA=150VA

The performance values do not look invalid, so I'm not certain what the issue is. There are thousands and thousands of similar entries.

ls /var/spool/icinga2/perf-collector/err | wc -l

38043