Using Lua from C++, Fails to open standard libs with Nil error - c++

Question

I've been writing Lua integration into a game project, and frustratingly, every time I try and use lua_pcall, I get the error "attempting to call nil value."
When I try to look up the error, most of the examples are of people who have forgotten to use pcall after loading their lua file, or some error down the line. But for me, it's as soon as I even attempt to load the lua standard libs. I don't understand what's going wrong with so little code to show for it. Other things I've tried are skipping openLibs and going straight to loading my file with doFile, but even in that case, anything I do at all will result in a nil error.
Any help is greatly appreciated.
EDIT:
Thanks to some help I determined that I didn't need to do a pcall for luaL_openlibs, but as I wrote above, trying to run any function at all results in errors. In this case, it can't find "init" in the global lua namespace
c++
void LuaScriptingInterface::init()
{
m_luaState = std::shared_ptr<lua_State>(luaL_newstate());
luaL_openlibs(m_luaState.get());
if (luaL_dostring(m_luaState.get(), m_script.c_str())) // script below
{
const char* errStr = lua_tostring(m_luaState.get(), -1);
ASSERT(false, errStr ); // not hitting this case
}
lua_getglobal(m_luaState.get(), "init");
if (!lua_isfunction(m_luaState.get(), -1))
{
ASSERT(false); // hit this case! Why can't we find "init"?
}
}
lua
init function ()
end
update function (dt)
end
It doesn't do anything yet of course, but I expect it should at least be able to find the function.

Answer 1

Hilariously the issue was in my FileReader code, there was an omitted newline character