FATAL ERROR: Could not load script file

[WalkingTerror]

I had all done and set up and then this error showed up what am i doing wrong ? And the .HPS and .Map file is in the maps folder and have both exact same names

This is my Code:

void OnStart()
{
AddUseItemCallback("", Key, Door, "UseKeyOnDoor", true);
}

void UseKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("Door", false, true);
}

void OnEnter()
{
SetPlayerLampOil(100);
PreloadSound("amb_idle.snt");
}

void OnLeave()
{
}