server debug

--worldname takes precedence over previously selected world.
16:21:05: ERROR[main]: WARNING: Using commanded gameid [0gb.us_game] instead of world gameid [minetest]
[maptools] loaded.
 Currency mod loading...
[Currency] Craft_items Loaded!
[Currency] Shop Loaded!
[Currency]  Barter Loaded!
[Currency] Safe Loaded!
[Currency] Crafting Loaded!
16:21:06: ERROR[main]: ========== ERROR FROM LUA ===========
16:21:06: ERROR[main]: Failed to load and run script from
16:21:06: ERROR[main]: /home/minetest/.minetest/mods/farmingplus/init.lua:
16:21:06: ERROR[main]: /home/minetest/.minetest/mods/farmingplus/init.lua:171: attempt to concatenate a nil value
16:21:06: ERROR[main]: stack traceback:
16:21:06: ERROR[main]: 	/home/minetest/.minetest/mods/farmingplus/init.lua:171: in main chunk
16:21:06: ERROR[main]: =======END OF ERROR FROM LUA ========
16:21:06: ERROR[main]: Server: Failed to load and run /home/minetest/.minetest/mods/farmingplus/init.lua
16:21:06: ERROR[main]: ERROR: An unhandled exception occurred: ModError: Failed to load and run /home/minetest/.minetest/mods/farmingplus/init.lua

In thread 7f0173f0e780:
/build/buildd/minetestc55-0.4.7/src/main.cpp:2179: int main(int, char**): Assertion '0' failed.
Debug stacks:
DEBUG STACK FOR THREAD 7f0173f0e780:
#0  int main(int, char**)
(Leftover data: #1  Dedicated server branch)
Aborted