Fix local path when serving files

main.js

@@ -1,4 +1,5 @@
 const {app, BrowserWindow, shell} = require('electron')
+const path = require('path')
 const express = require('express')
 const eApp = express()
 
@@ -24,7 +25,7 @@ function createWindow() {
 	mainWindow.setMenuBarVisibility(false)
 
 	// Start a local express server to serve static files
-	eApp.use(express.static(frontendPath))
+	eApp.use(express.static(path.join(__dirname, frontendPath)))
 	// Handle urls set by the frontend
 	eApp.get('*', (request, response, next) => {
 		response.sendFile(`${__dirname}/${frontendPath}index.html`);

package.json

@@ -53,6 +53,7 @@
     "electron-builder": "^22.9.1"
   },
   "dependencies": {
+    "connect-history-api-fallback": "^1.6.0",
     "express": "^4.17.1"
   }
 }

yarn.lock

@@ -433,6 +433,11 @@ configstore@^5.0.1:
     write-file-atomic "^3.0.0"
     xdg-basedir "^4.0.0"
 
+connect-history-api-fallback@^1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/connect-history-api-fallback/-/connect-history-api-fallback-1.6.0.tgz#8b32089359308d111115d81cad3fceab888f97bc"
+  integrity sha512-e54B99q/OUoH64zYYRf3HBP5z24G38h5D3qXu23JGRoigpX5Ss4r9ZnDk3g0Z8uQC2x2lPaJ+UlWBc1ZWBWdLg==
+
 content-disposition@0.5.3:
   version "0.5.3"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.3.tgz#e130caf7e7279087c5616c2007d0485698984fbd"