2017-01-27 21:28:05: ERROR[Main]: generateImage(): Could not load image "default_rail_t_junction.png" while building texture
2017-01-27 21:28:05: ERROR[Main]: generateImage(): Creating a dummy image for "default_rail_t_junction.png"
2017-01-27 21:28:05: ERROR[Main]: generateImage(): Could not load image "default_rail_crossing.png" while building texture
2017-01-27 21:28:05: ERROR[Main]: generateImage(): Creating a dummy image for "default_rail_crossing.png"
2017-01-27 21:28:05: WARNING[Server]: core.env:[...] is deprecated and should be replaced with core.[...]
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "minp" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:411.
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "maxp" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:412.
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "nodes" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:261.
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "air_plus_ignore_under" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:415.
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "totalnodes" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:276.
2017-01-27 21:28:05: WARNING[Server]: Assignment to undeclared global "desert_in_range" inside a function at ...minetest/worlds/NYC/worldmods/ambience/ambience/init.lua:465.
2017-01-27 21:28:06: ERROR[Main]: ServerError: Lua: Runtime error from mod 'default' in callback LuaABM::trigger(): .../minetest/games/minetest_game/mods/default/functions.lua:349: bad argument #2 to 'find_node_near' (number expected, got nil)
2017-01-27 21:28:06: ERROR[Main]: stack traceback:
2017-01-27 21:28:06: ERROR[Main]: [C]: in function 'find_node_near'
2017-01-27 21:28:06: ERROR[Main]: .../minetest/games/minetest_game/mods/default/functions.lua:349: in function <.../minetest/games/minetest_game/mods/default/functions.lua:340>