Just installed the recent update for advanced module manager 9.1.1 and got this after:
success
Regular Labs Library has been successfully updated to v22.4.22003
Conditions has been successfully updated to v22.4.22003
An error has occurred.
0 Attempt to modify property "rules" on null
The component is updated to v9.1.1 but the action log and amm plugins are not being updated when the error occurs, they are still showing as v9.1.0. If checking for updates again, the 9.1.1 update shows in the list again.
It does successfully install on some local joomla installs without a problem. The ones running akeeba admin tools and akeeba backup, both local and live sites, is where this error occurs as the only difference I can see in the setup. Checking to see if I can figure this out.