Rancher v2.6.7 ImagePullBackOff

I tryed upgrade rancher from v2.6.6 to v2.6.7.

helm upgrade rancher rancher-latest/rancher --namespace cattle-system --set xxxxxxxx

But I couldn’t upgrade with error ImagePullBackOff .

kubectl get pods --all-namespaces

NAMESPACE NAME READY STATUS RESTARTS AGE
cattle-fleet-local-system fleet-agent-57497ff7dc-w4765 1/1 Running 3 (31d ago) 142d
cattle-fleet-system fleet-controller-5746685958-2h2sc 1/1 Running 0 23m
cattle-fleet-system gitjob-cc9948fd7-tj6cg 1/1 Running 0 23m
cattle-system rancher-64dbf57686-ccjst 0/1 ImagePullBackOff 0 16h
cattle-system rancher-64dbf57686-m6sg8 0/1 ImagePullBackOff 0 16h
cattle-system rancher-ff955865-fvf9w 1/1 Running 0 23m

How can I chage “image-pull-progress-deadline” parameter on RKE environment?