20:58:35: ERROR[main]: ERROR: An unhandled exception occurred: ServerError: LuaE
rror: error: stack overflow
20:58:35: ERROR[main]: stack traceback:

In thread 7fb756cc8780:
/home/vanessa/Minetest-Textures-and-mods/minetest_engine/src/main.cpp:2179: int
main(int, char**): Assertion '0' failed.
Debug stacks:
DEBUG STACK FOR THREAD 7fb756cc8780:
#0  int main(int, char**)
(Leftover data: #1  Dedicated server branch)
(Leftover data: #2  virtual void ServerMap::save(ModifiedState))
(Leftover data: #3  virtual void ServerMap::saveBlock(MapBlock*))