Been playing Level up with the Dimension Warp mod and I keep having a reoccuring error everytime I warp planets

Error while running event levelup::on_nth_tick(6)
levelup/control.lua:18: attempt to index field '?' (a nil value)
stack traceback:
levelup/control.lua:18: in function 'refresh_chunks'
levelup/control.lua:49: in function 'get_buildings'
levelup/control.lua:75: in function <levelup/control.lua:73>

Asked that mod creator if it was something on his end and he said no, this was his response

"unfortunately, it's something on the level up mod side.
It looks like it uses surfaces index (instead of looping over surfaces themselves) but not expecting non contiguous indexes (as surfaces in dimension warp are created/deleted as we warp), resulting in checking non existing surfaces."

Dunno if this is something you are able to fix or not, but would be greatly appreciated!

Hey, I had a quick look at the mod repo, and can see do they delete surfaces.
maybe it needs a check if the surface is still valid but I'll have to test it.

https://github.com/Kyria/dimension-warp/blob/d30503a71005a1d260638762b9ef82b09370a2f6/scripts/surface-generation.lua#L83

Have pushed a fix in v1.0.4 and it seemed to survive warping the first three "worlds".
Please do let me know if you see any issues.

Version 1.0.5 reintroduced the OP's bug while using Dimension Warp.

The mod Level Up (1.0.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event levelup::on_nth_tick(6)
levelup/control.lua:19: attempt to index global 'surface' (a nil value)
stack traceback:
levelup/control.lua:19: in function 'refresh_chunks'
levelup/control.lua:56: in function 'get_buildings'
levelup/control.lua:83: in function <levelup/control.lua:81>

added a bunch of code to deal with the deleting surfaces, then passed a few hours of testing today.