Nutmon alerts stopped working

I noticed that Nutmon email alerts stopped working. Probably after an update because I did not change anything in the config

here is my /etc/config/nut_monitor

config master
  option upsname 'powercom500u'
  option hostname 'localhost'
  option powervalue '1'
  option username 'local_mon'
  option password 'xxxxxxxxxxxx'

config upsmon 'upsmon'
  option shutdowncmd '/bin/false'
  option notifycmd '/etc/nutmon_alerts/send-alert'
  option runas 'nutmon'
  list defaultnotify 'EXEC'
  list defaultnotify 'SYSLOG'

and there is the config generated in /var/etc/nut/upsmon.conf

# Config file automatically generated from UCI config
RUN_AS_USER nutmon
MINSUPPLIES 1
SHUTDOWNCMD "/bin/false"
NOTIFYCMD "/etc/nutmon_alerts/send-alert"
POLLFREQ 5
POLLFREQALERT 5
HOSTSYNC 15
DEADTIME 15
POWERDOWNFLAG /var/run/killpower
NOTIFYFLAG ONLINE EXEC+SYSLOG
NOTIFYFLAG ONBATT EXEC+SYSLOG
NOTIFYFLAG LOWBATT EXEC+SYSLOG
NOTIFYFLAG FSD EXEC+SYSLOG
NOTIFYFLAG COMMOK EXEC+SYSLOG
NOTIFYFLAG COMMBAD EXEC+SYSLOG
NOTIFYFLAG SHUTDOWN EXEC+SYSLOG
NOTIFYFLAG REPLBATT EXEC+SYSLOG
NOTIFYFLAG NOCOMM EXEC+SYSLOG
NOTIFYFLAG NOPARENT EXEC+SYSLOG
RBWARNTIME 43200
NOCOMMWARNTIME 300
FINALDELAY 5
CERTVERIFY 0
FORCESSL 0
MONITOR powercom500u@localhost 1 local_mon xxxxxxxxxxxx master

both /etc/nutmon_alerts/send-alert and sudo -u nutmon /etc/nutmon_alerts/send-alert commands work ok

Also here is log for logread | grep powercom500u

Thu Nov  4 16:47:29 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged out from UPS [powercom500u]
Thu Nov  4 16:47:29 2021 daemon.err upsmon[8383]:    0.000144	UPS: powercom500u@localhost (master) (power value 1)
Thu Nov  4 16:47:29 2021 daemon.err upsmon[8383]:    0.009450	Trying to connect to UPS [powercom500u@localhost]
Thu Nov  4 16:47:29 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged into UPS [powercom500u]
Thu Nov  4 16:47:29 2021 daemon.err upsmon[8383]:    0.020187	Logged into UPS powercom500u@localhost
Thu Nov  4 16:48:52 2021 daemon.notice upsd[3972]: Data for UPS [powercom500u] is stale - check driver
Thu Nov  4 16:48:52 2021 daemon.notice upsd[3972]: UPS [powercom500u] data is no longer stale
Thu Nov  4 16:48:53 2021 daemon.err upsmon[8383]:   84.559999	Poll UPS [powercom500u@localhost] failed - Write error: Broken pipe
Thu Nov  4 16:48:53 2021 daemon.err upsmon[8383]:   84.560052	Communications with UPS powercom500u@localhost lost
Thu Nov  4 16:48:54 2021 daemon.err collectd[4337]: nut plugin: nut_read: upscli_list_start (powercom500u) failed: Write error: Broken pipe
Thu Nov  4 16:48:54 2021 daemon.err collectd[4337]: read-function of plugin `nut/powercom500u@localhost' failed. Will suspend it for 60.000 seconds.
Thu Nov  4 16:48:58 2021 daemon.err upsmon[8383]:   89.569508	Trying to connect to UPS [powercom500u@localhost]
Thu Nov  4 16:48:58 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged into UPS [powercom500u]
Thu Nov  4 16:48:58 2021 daemon.err upsmon[8383]:   89.572043	Logged into UPS powercom500u@localhost
Thu Nov  4 16:48:58 2021 daemon.err upsmon[8383]:   89.573400	Communications with UPS powercom500u@localhost established
Thu Nov  4 17:13:28 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged out from UPS [powercom500u]
Thu Nov  4 17:13:28 2021 daemon.err upsmon[14925]:    0.000164	UPS: powercom500u@localhost (master) (power value 1)
Thu Nov  4 17:13:28 2021 daemon.err upsmon[14925]:    0.003019	Trying to connect to UPS [powercom500u@localhost]
Thu Nov  4 17:13:28 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged into UPS [powercom500u]
Thu Nov  4 17:13:28 2021 daemon.err upsmon[14925]:    0.008153	Logged into UPS powercom500u@localhost
Thu Nov  4 17:15:27 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged out from UPS [powercom500u]
Thu Nov  4 17:15:27 2021 daemon.err upsmon[16364]:    0.000837	UPS: powercom500u@localhost (master) (power value 1)
Thu Nov  4 17:15:27 2021 daemon.err upsmon[16364]:    0.002948	Trying to connect to UPS [powercom500u@localhost]
Thu Nov  4 17:15:28 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged into UPS [powercom500u]
Thu Nov  4 17:15:28 2021 daemon.err upsmon[16364]:    0.008249	Logged into UPS powercom500u@localhost
Thu Nov  4 17:45:48 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged out from UPS [powercom500u]
Thu Nov  4 17:45:51 2021 daemon.info upsd[3972]: User local_mon@127.0.0.1 logged into UPS [powercom500u]

also this:

Thu Nov  4 17:54:13 2021 daemon.notice upsd[3972]: Data for UPS [powercom500u] is stale - check driver
Thu Nov  4 17:54:17 2021 daemon.notice upsd[3972]: UPS [powercom500u] data is no longer stale

Is this state message somehow related to the issue?

here is what the logs reads if I unplug and plug the UPS

Thu Nov  4 18:07:07 2021 daemon.err upsmon[6588]: 2352.664289	UPS powercom500u@localhost on battery
Thu Nov  4 18:07:22 2021 daemon.err upsmon[6588]: 2367.694366	UPS powercom500u@localhost on line power

The info is written to the log bug there are still no alerts

Has anyone has a similar problem?

Still now answer, too bad. Does anybody use Nutmon at all?