avtar Error <5775>: Internal Error: backtree

Hi all,

Been getting a few Avamar backups that have been failing and producing errors like the one below. I'm pretty new to Avamar, so not sure what's causing the error.

Any assistance would be appreciated.

2021-07-20 01:01:33 avtar Info <16281>: Not traversing 'C:\ProgramData\Templates' since it's of type 'REPARSE_SYSTEM_DIR_JUNCTION'
2021-07-20 01:06:38 avtar Info <7694>: Server(grid4) not responding (possible network congestion?) (300 seconds)
2021-07-20 01:11:37 avtar Error <5775>: Internal Error: backtree: bad response 360686869843b90a76db084ef58ac410bab3015e 1060 ADD_COMP_DATA=368 serial=1060 seq=0 flags=R:N:0 kind=0 rsp=MSG_ERR_INVALID_PARAMETERS
2021-07-20 01:11:37 avtar Info <5726>: Aborting backup due to error (3:EXC_HFSERROR)
2021-07-20 01:11:37 avtar FATAL <5399>: Internal error, aborting
2021-07-20 01:11:37 avtar Info <9772>: Starting graceful (staged) termination, error reported in nbackmain (wrap-up stage)
2021-07-20 01:11:37 avtar Info <7883>: Finished at 2021-07-20 01:11:37 GMT Daylight Time, Elapsed time: 0000h:10m:25s
2021-07-20 01:11:37 avtar Info <6149>: Error summary: 2 errors: 5399, 5775
2021-07-20 01:11:37 avtar Info <8468>: Sending wrapup message to parent
2021-07-20 01:11:37 avtar Info <5314>: Command failed (2 errors, exit code 10014: internal failure)