Warning - Couldnt set thread culture undefined

In Identity manager log I am keep getting WARN messages mentioned in subject. 

In a detailed log I have those lines

2022-01-04 00:00:42.2449 WARN (lambda_met m2cautcjm5hv2vprb5tkfqkp) : Couldnt set thread culture undefined
2022-01-04 00:00:42.2449 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : Check for updates
2022-01-04 00:00:42.2449 TRACE ( Update m2cautcjm5hv2vprb5tkfqkp) : Lock file C:\inetpub\wwwroot\IdentityManager\App_Data\AutoUpdate_LM_W3SVC_1_ROOT_IdentityManager\update.lock does not exist.
2022-01-04 00:00:42.2449 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : Locked: False
2022-01-04 00:00:42.2449 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : DB revision: 21541265, working dir revision: 21541265
2022-01-04 00:00:47.2697 WARN (lambda_met m2cautcjm5hv2vprb5tkfqkp) : Couldnt set thread culture undefined
2022-01-04 00:00:47.2697 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : Check for updates
2022-01-04 00:00:47.2697 TRACE ( Update m2cautcjm5hv2vprb5tkfqkp) : Lock file C:\inetpub\wwwroot\IdentityManager\App_Data\AutoUpdate_LM_W3SVC_1_ROOT_IdentityManager\update.lock does not exist.
2022-01-04 00:00:47.2697 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : Locked: False
2022-01-04 00:00:47.2697 DEBUG ( Update m2cautcjm5hv2vprb5tkfqkp) : DB revision: 21541265, working dir revision: 21541265
2022-01-04 00:00:48.0822 TRACE ( SqlLog ) : Cleanup physical connection pool
2022-01-04 00:00:48.0822 TRACE ( SqlLog ) : 0 connections disposed.
2022-01-04 00:00:48.0822 TRACE ( SqlLog ) : Available = 1
2022-01-04 00:00:48.0822 TRACE ( SqlLog ) : Reusable = 7
2022-01-04 00:00:52.2854 WARN (lambda_met m2cautcjm5hv2vprb5tkfqkp) : Couldnt set thread culture undefined

Does anybody have idea about where to check and what might be root cause for those warnings?

Many thanks

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