I'm trying to execute:

microk8s kubectl apply -f  deployment.yaml 

and I am always getting:

error: string field contains invalid UTF-8

No matter which file and string as a file path parameter I'm trying to use. Even if I execute:

microk8s kubectl apply -f  blablabla

Result is the same.

UPD: I resolved the problem by restarting microk8s service. After restart everything is fine, but I still have no idea what it was.