Throwing an error in "Perform Full Sync"

@Revathi.B, I have added changes to fix above error . please kindly review the Patch file.

No @abhishek, first in the configuration settings form itself Client secret is not there.
So maintainer have to confirm that he refers client secret key or graph key for this requirement.

Thanks folks, it was indeed the wrong reference, I have fixed it to refer to the graph_key instead :)

Automatically closed - issue fixed for 2 weeks with no activity.