avvcbimage Error <0000>: [IMG0014] Problem logging into URL 'https://XXXXXXXX:443/sdk' with user 'XXXXX@XXX

We have Avamar version 18.2, Everything was running fine until we upgraded vCenter from version 6.7 to version 7.0.

After the upgrade, All VM image backups are failing with the below error message. 

2020-11-25 19:00:50 avvcbimage Info <18664>: Login(https://XXXXXXX.XXX:443/sdk) Datacenter: 'XX001'
2020-11-25 19:00:50 avvcbimage Info <19728>: - connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.0 build-16749670', apiVersion:'7.0.0.0'
2020-11-25 19:00:50 avvcbimage Info <16005>: Login(https://XXXXXXX.XXX:443/sdk) problem with reused sessionID='xxxxxxxxxxxxxxxxx' contacting data center 'xx001'.
2020-11-25 19:00:50 avvcbimage Warning <0000>: [IMG0014] Problem logging into URL 'https://XXXXXXX.XXX:443/sdk' with session cookie.
2020-11-25 19:00:50 avvcbimage Info <16021>: Logging into URL 'https://XXXXXXX.XXX:443/sdk' with user 'XXXXX@XXX' credentials.
2020-11-25 19:00:50 avvcbimage Info <19726>: Login(https://XXXXXXX.XXX:443/sdk) Datacenter: 'XX001', connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.0 build-16749670' apiVersion: '7.0.0.0'
2020-11-25 19:00:50 avvcbimage Info <42219>: vCenter login using username and password.
2020-11-25 19:00:50 avvcbimage Info <14678>: Login(https://XXXXXXX.XXX:443/sdk) problem with sessionID='xxxxxxxxxxxxxxxxx' contacting data center 'XX001'.
2020-11-25 19:00:50 avvcbimage Error <0000>: [IMG0014] Problem logging into URL 'https://XXXXXXX.XXX:443/sdk' with user 'XXXXX@XXX'
2020-11-25 19:00:50 avvcbimage Info <40741>: VSphereAPI::logout() Logout - OK
2020-11-25 19:00:50 avvcbimage Info <9772>: Starting graceful (staged) termination, Failed to log into web service. (wrap-up stage)
2020-11-25 19:00:50 avvcbimage Warning <40657>: Login failed

has anybody faced this issue?