Can't use Offset Animation

[9chip6]

I use blender 3.0 and 2.93. My version's addon is 2.2.0.
While i press Offset Animation. The error pop up and i don't know what it is. Please help.

[mrachinskiy]

Your objects have empty material slots, remove them or assign a material. Meanwhile I will work on a proper fix for this issue.

[mrachinskiy]

Thanks for the report, this issue will be fixed in 2.2.1 release.

[9chip6]

Thank you.