Looks like a bug. I checked my syslog where I run k3s and it has errors like :

Oct  5 00:07:59 sj1010010242096 k3s[350891]: I1005 00:07:59.811609  350891 kubelet_pods.go:888] "Unable to retrieve pull secret, the image pull may not succeed." pod="default/pulumi-k8s-operator-92ajub40-6ff76b67c5-fflmm" secret="" err="secret \"pulumi-kubernetes-operator\" not found"