Failed to load mods: lignumis/prototypes/content/lignumis/planet.lua:110: attempt to call field 'borrow_music' (a nil value)
stack traceback:
lignumis/prototypes/content/lignumis/planet.lua:110: in main chunk
[C]: in function 'require'
lignumis/prototypes/content/data.lua:2: in main chunk
[C]: in function 'require'
lignumis/data.lua:13: in main chunk

PlanetsLib broke it. See here https://github.com/danielmartin0/PlanetsLib/issues/16 and the reaction here https://mods.factorio.com/mod/PlanetsLib/changelog
Either wait for a fix or downgrade PlanetsLib to 1.1.24.

Apologies cackling.fiend. This function gave an infinite memory leak on my device, so alongside other (it turns out phantom) issues I removed it.

This shouldn't have happened as your mod was using it successfully, so I'll be more careful removing APIs in future.

funny updated mod where u removed the borrow_music
at the same time updated planetslib and readded borrow_music :-)

Yeah, I waited quite some time but I knew that it's an ugly situation and I didn't know when PlanetsLib was going to be updated again. So to be safe I pusblished the change rather than waiting longer. It's not crucial, just music, so better comment the code out than letting people wait longer.