org.luaj.vm2.LuaError: LuaTimeOutSandbox.loader:34 org.luaj.vm2.LuaError: #1000066:6 bad argument: string expected, got nil
stack traceback:
	#1000066:6: in main chunk
	[Java]: in ?
	at org.luaj.vm2.LuaValue.argerror(LuaValue.java:1070)
	at org.luaj.vm2.LuaValue.checkstring(LuaValue.java:995)
	at org.luaj.vm2.Varargs.checkstring(Varargs.java:343)
	at org.luaj.vm2.lib.StringLib.str_find_aux(StringLib.java:723)
	at org.luaj.vm2.lib.StringLib.find(StringLib.java:203)
	at org.luaj.vm2.lib.StringLib$StringLibV.invoke(StringLib.java:103)
	at org.luaj.vm2.LuaClosure.execute(LuaClosure.java:383)
	at org.luaj.vm2.LuaClosure.onInvoke(LuaClosure.java:188)
	at org.luaj.vm2.LuaClosure.invoke(LuaClosure.java:181)
	at org.luaj.vm2.LuaThread$State.run(LuaThread.java:192)
	at java.lang.Thread.run(Thread.java:636)

stack traceback:
	LuaTimeOutSandbox.loader:34: in main chunk
	[Java]: in ?
	at org.luaj.vm2.lib.BaseLib$error.call(BaseLib.java:179)
	at org.luaj.vm2.lib.TwoArgFunction.call(TwoArgFunction.java:62)
	at org.luaj.vm2.LuaClosure.execute(LuaClosure.java:370)
	at org.luaj.vm2.LuaClosure.call(LuaClosure.java:143)
	at net.luaos.tb.common.Loader.call(Loader.java:59)
	at net.luaos.tb.common.LuaTimeOutSandbox.callLuaWithStats(LuaTimeOutSandbox.java:61)
	at net.luaos.tb.tb12.Sandbox.callLuaWithStats(Sandbox.java:116)
	at net.luaos.tb.tb12.Sandbox.runLua(Sandbox.java:100)
	at net.luaos.tb.tb32.IRLuaScriptRunner.run_returnAsLua(IRLuaScriptRunner.java:30)
	at net.luaos.tb.tb32.IRLuaScriptRunner.run(IRLuaScriptRunner.java:18)
	at net.luaos.tb.tb32.IRPitcher.runScript(IRPitcher.java:148)
	at net.luaos.tb.tb32.IRPitcher.pitchPair(IRPitcher.java:133)
	at net.luaos.tb.tb32.IRPitcher.pitchRun(IRPitcher.java:103)
	at net.luaos.tb.tb32.IRPitcher.pitch(IRPitcher.java:75)
	at net.luaos.tb.tb32.IRPitcher.main(IRPitcher.java:37)
	at irpitcher.main(irpitcher.java:8)