Error while running event productions-per-minute::on_gui_click (ID 1)
productions-per-minute/control.lua:69: attempt to index field 'gui_data_by_player' (a nil value)
stack traceback:
productions-per-minute/control.lua:69: in function <productions-per-minute/control.lua:68>

Same, but I can reproduce it easily with a newly placed machine (Burner Assembler) (seems to be after loading a save but might be a coincidence - worked just fine until then):
The mod Productions Per Minute (0.2.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event productions-per-minute::on_gui_opened (ID 95)
productions-per-minute/control.lua:42: bad argument #1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
productions-per-minute/control.lua:42: in function 'is_valid_gui_entity'
productions-per-minute/control.lua:52: in function <productions-per-minute/control.lua:50>

Thank you for the error logs.

I'll investigate when I get home

Update for this issue.

I have identified the root cause of the issue and hopefully fix it.
Still have couple place of code to check with the new mod api.

Hopefully I can push a new version to fix this issue in couple hours

Version 0.2.2 should be up soon.

It should fix both of you guys issue.

Sorry for the wait. Keep me posted if you still have issues

Thanks a lot for the work <3 ! I'm reactivating the mod and trying now

Thanks a lot for the work <3 ! I'm reactivating the mod and trying now

Yeah, me too, thanks!