Cannot open Data Protector tab with Advance GRE Web Plug-in on vmware.

vCenter Version 6.5.0 Build 4602587
ESXi Host Version 6.5.0 Build 4564106

         We tried to install Advance GRE Web Plug-in from Data Protector to vcenter, that installation successfully. But we cannot use Data Protector in vmware plug-in tab.
We found some message on page as below: How I can solve this problem?

DP ERROR

 

 

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