Failed to load mods: ...andalone-stack-inserter__/prototypes/entity/entities.lua:2: Path um-standalone-electromagnetic-plant/prototypes/entity/sounds.lua does not match any enabled mod.
stack traceback:
[C]: in function 'require'
...andalone-stack-inserter__/prototypes/entity/entities.lua:2: in main chunk
[C]: in function 'require'
um-standalone-stack-inserter/data.lua:4: in main chunk

Mods to be disabled:
• um-standalone-stack-inserter (1.0.0)

After installing Standalone Electromagnetic Plant, it loads fine. Guessing the dependency on the EM plant wasn't intentional?