ERROR: build step 2 "gcr.io/cloud-builders/gke-deploy" failed: step exited with non-zero status: 1

While Doing Sprint 5 in GCP DevOps project course, validate and deploy our application on GKE, I got the below error

ERROR
ERROR: build step 2 “gcr.io/cloud-builders/gke-deploy” failed: step exited with non-zero status: 1