manually set basePath in next.config.mjs (#109)

Author: BramSuurdje

frontend/next.config.mjs

@@ -19,7 +19,7 @@ const nextConfig = {
   },
 
   output: "export",
-  basePath: `/${process.env.BASE_PATH}`,
+  basePath: `/ProxmoxVE`,
 };
 
 export default nextConfig;