The mod Miniloader (1.15.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event miniloader::on_player_rotated_entity (ID 21)
miniloader/control.lua:169: attempt to index local 'miniloader' (a nil value)
stack traceback:
miniloader/control.lua:169: in function 'handler'
miniloader/lualib/event.lua:15: in function <miniloader/lualib/event.lua:13>

Space mini-loader > Space cargo wagon. Miniloader is not functioning, attempt to rotate causes crash. Has happened twice with different miniloaders, deconstructing & replacing appears to work.