Vcenter Backups Failing

Hi All,

I have added Vcenter for avamar version 18.2.0,

Established proxy server, its communicating fine,

But when im adding clients and initiating backups its getting failed 

these are the log's

 <5008>: Logging to /usr/local/avamarclient/var/MOD-16601355597633962ef562354865fe43aaf84dc43d08fddeb2a29-3016-vmimagew.log
 <5174>: - Reading /usr/local/avamarclient/var/avvcbimage.cmd
 <5174>: - Reading /usr/local/avamarclient/var/avvcbimageAll.cmd
 <6673>: CTL listening on port 60740
<10684>: Setting ctl message version to 3 (from 1)
 <16136>: Setting ctl max message size to 268435456
 <40636>: SSL Certificate Thumbprint: 41:7C:32:D1:AE:3E:62:BD:8C:97:77:1F:8B:43:DA:3B:65:A6:78:44
<42665>: setParent(): sGuestName= sProxyHostName=in-s-bkavogc.iclab.com svCentername=10.0.0.51 sGuestVmName=IN-S-ITBAFC548-1 sVmxPath=[Datastore_Local] IN-S-ITBAFC548-1/IN-S-ITBAFC548-1.vmx
 <43574>: vcApiVersion 6.5
 <43575>: VSphereHTTP::vcVersion65 will be true
 <42137>: job type = 4
 <18664>: Login(https://10.0.0.51:443/sdk) Datacenter: 'IC-DC-ICLAB'
<19728>: - connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.3 build-20051473', apiVersion:'7.0.3.0'
<16005>: Login(https://10.0.0.51:443/sdk) problem with reused sessionID='5dc6f8000bfdf7985f6678c2a04ae55ac1f8de35' contacting data center 'IN-DC-ICLAB'.
 <0000>: [IMG0014] Problem logging into URL 'https://10.0.0.51:443/sdk' with session cookie.
 <16021>: Logging into URL 'https://10.0.0.51:443/sdk' with user 'bcadmin@vsphere.local' credentials.
 <19726>: Login(https://10.0.0.51:443/sdk) Datacenter: 'IN-DC-ICLAB', connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.3 build-20051473' apiVersion: '7.0.3.0'
<42219>: vCenter login using username and password.
 <14678>: Login(https://10.0.0.51:443/sdk) problem with sessionID='aaa8d4b84bda6878fe4d42300e9f4d73d5ca5751' contacting data center 'IN-DC-ICLAB'.
 <0000>: [IMG0014] Problem logging into URL 'https://10.0.0.51:443/sdk' with user 'bcadmin@vsphere.local'
 <40741>: VSphereAPI::logout() Logout - OK
<9772>: Starting graceful (staged) termination, Failed to log into web service. (wrap-up stage)
 <40657>: Login failed
<40654>: isExitOK()=208
 <17823>: Body- abortrecommended(t)
<40658>: vmparams (10.0.0.51)
 <40654>: isExitOK()=208
 <42660>: Value of runflags.m_allDisksIncluded is true
 <0000>: [IMG0009] Create Snapshot: snapshot creation/pre-script/post-script failed.
 <40654>: isExitOK()=208
 <40659>: snapshot created:false NOMC:false ChangeBlTrackingAvail:true UsingChBl:true, ExitOK:false, cancelled:false, fatal: true
 <18664>: Login(https://10.0.0.51:443/sdk) Datacenter: 'IN-DC-ICLAB'
<19728>: - connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.3 build-20051473', apiVersion:'7.0.3.0'
 <16005>: Login(https://10.0.0.51:443/sdk) problem with reused sessionID='5dc6f8000bfdf7985f6678c2a04ae55ac1f8de35' contacting data center 'IN-DC-ICLAB'.
 <0000>: [IMG0014] Problem logging into URL 'https://10.0.0.51:443/sdk' with session cookie.
 <16021>: Logging into URL 'https://10.0.0.51:443/sdk' with user 'bcadmin@vsphere.local' credentials.
 <19726>: Login(https://10.0.0.51:443/sdk) Datacenter: 'IN-DC-ICLAB', connected to 'VirtualCenter' - version: 'VMware vCenter Server 7.0.3 build-20051473' apiVersion: '7.0.3.0'
 <42219>: vCenter login using username and password.