Problem in upgrading kong-ingress-controller

Questions
1

While upgrading KIC from v2.7.0 I am getting this error when I check logs

Defaulted container "ingress-controller" out of: ingress-controller, proxy
Error: unknown command "/kong-ingress-controller" for ""

I have deployed Kong using kong and
I traced it to my templates/_helpers.tpl

Versions currently deployed for Kong are V3.1.1-alpine, KIC V2.7.0
Wanting Upgrade kong v3.6.1, KIC v3.1.1

My for the kong pod describe is

Events:
  Type     Reason     Age                    From               Message
  ----     ------     ----                   ----               -------
  Normal   Scheduled  3m19s                  default-scheduler  Successfully assigned edison-core/eis-kong-77ff786897-fnlx9 to master-node
  Normal   Pulled     3m19s                  kubelet            Container image "kong:3.6.1" already present on machine
  Normal   Created    3m19s                  kubelet            Created container proxy
  Normal   Started    3m19s                  kubelet            Started container proxy
  Normal   Pulled     2m23s (x4 over 3m19s)  kubelet            Container image "kong/kubernetes-ingress-controller:3.1.1" already present on machine
  Normal   Created    2m23s (x4 over 3m19s)  kubelet            Created container ingress-controller
  Normal   Started    2m23s (x4 over 3m19s)  kubelet            Started container ingress-controller
  Warning  BackOff    2m21s (x8 over 3m16s)  kubelet            Back-off restarting failed container ingress-controller in pod eis-kong-77ff786897-fnlx9_edison-core(b5ab73ac-3685-4cbe-a027-cdbc84f280f5)
2

@Anupam_Moharana - Were you able to resolve this issue? We are also getting the same errors.