Absolute paths can't be used with path.join, so replace it with path.resolve

server.js

@@ -5,7 +5,7 @@
 const config = require("./config.json");
 const path = require("path");
 
-const errorReporter = require("./src/error-reporting")(path.join(__dirname, config.errors.directory));
+const errorReporter = require("./src/error-reporting")(path.resolve(__dirname, config.errors.directory));
 
 const express = require("express");
 const expressWs = require("express-ws");