xcp-ng logs flooded with "became not supported"/"became supported" errors

[meekser]

I have 2 issues found after implementing this template:

1. zabbix_server.log is flooded with below "became not supported"/"became supported" errors.
   Zabbix seems like not report any problems but logs are full of these:
   2404683:20240524:024302.813 item ":citrix.xenserver.py["-m","{$XENMASTER}","-u","{$XENUSERNAME}","-p","{$XENPASSWORD}","-t","host","-H","{HOST.NAME}","-c","value","-f","pif_aggr_rx"]" became not supported: Value of type "string" is not suitable for value type "Numeric (float)". Value "Exception ignored in: <function Lock.del at 0x7f71f0f4ef20>
   2404683:20240524:024402.191 item ":citrix.xenserver.py["-m","{$XENMASTER}","-u","{$XENUSERNAME}","-p","{$XENPASSWORD}","-t","host","-H","{HOST.NAME}","-c","value","-f","pif_aggr_rx"]" became supported

2. some externally mounted / shared storage is erroring with similar exceptions in zabbix itself this time:
   Value of type "string" is not suitable for value type "Numeric (float)". Value ""

Any tips on what might be the issue and/or how to debug it? Thanks.