Post-mortem: Upgrade failure during checks phase with `no such file or directory`

Version: 5.2.x

What happened:
Gravity upgrade failed in checks phase, with an error “no such file or directory”.

Error executing function "upgrade": "
Original Error: *status.statusError rpc error: code = Unknown desc = no
 such file or directory
Stack Trace:
	/gopath/src/ github

What we did to recover:
N/A customer preferred a patched version

Permanent Fix:
This is addressed as a software fix via PR