/// <summary>
/// looks in the lua stack top if theres a string on top
/// if it is a string then it adds it as an error message to the Errors list
/// Clears the method off the stack by setting the top to 0
/// </summary>
public void LogError()
{
//log error
if (Lua.lua_isstring(L, -1) > 0)
{
Errors.Add(Lua.lua_tostring(L, -1));
}
//clear the stack
Lua.lua_settop(L, 0);
}