item became not supported: Item preprocessing step #1 failed: (null)

Hello!

Upgraded 3.4.0 to 3.4.1 today and now I see messages in logs like:
38036:20170828:141528.207 item "hp5700-irf:Bridge-Aggregation6-in" became not supported: Item preprocessing step #1 failed: (null)
38039:20170828:141534.248 item "hp5700-irf-213:Bridge-Aggregation6-out" became supported

This is snmp v1 item , which gets data from switch.
I as can see there are no problems with snmpget , it always returns value:

snmpget -v1 -c public 192.168.22.178 interfaces.ifTable.ifEntry.ifOutOctets.26775
IF-MIB::ifOutOctets.26775 = Counter32: 3235259768

btw, there are no such errors in log with zabbix 3.4.0.

Looks like new bug.
Thank you!