Issues with rollback using Directory Update Module

[kacf]

@bonini_lucas

2019-09-24 18:28:03 +0000 UTC debug: Calling module: /usr/share/mender/modules/v3/web-file ArtifactInstall /var/lib/mender/modules/v3/payloads/0000/tree
2019-09-24 18:28:03 +0000 UTC info: Update module output: rm:
2019-09-24 18:28:03 +0000 UTC info: Update module output: missing operand
2019-09-24 18:28:03 +0000 UTC info: Update module output: Try ‘rm --help’ for more information.
2019-09-24 18:28:03 +0000 UTC error: Update module terminated abnormally: exit status 123
2019-09-24 18:28:03 +0000 UTC error: transient error: Update module terminated abnormally: exit status 123

Earlier there are these errors also, during ArtifactInstall. Maybe the backup is never created?