Merge pull request #488 from hashtopolis/1265-properly-implement-cors

Improved network error message to include CORS message

Author: gluafamichl

src/app/core/_interceptors/http-res.interceptor.ts

@@ -52,9 +52,10 @@ export class HttpResInterceptor implements HttpInterceptor {
     } else if (error.status === 404 && !req.url.includes('config.json')) {
       errmsg = `The requested URL was not found.`;
     } else if (error.status === 0) {
+      const frontendBaseURL = window.location.href.split('/').slice(0, 3).join('/');
       errmsg = `Network error. Please verify the IP address (${this.extractIpAndPort(
         req.url
-      )}) and try again. Note: APIv2 HASHTOPOLIS_APIV2_ENABLE=1 needs to be enabled. `;
+      )}) and try again. Also the following options must be set in the .env file: HASHTOPOLIS_APIV2_ENABLE=1 and HASHTOPOLIS_FRONTEND_URLS must include the used Hashtopolis frontend: ${frontendBaseURL} `;
     } else {
       errmsg = error.error?.title || 'An unknown error occurred.';
     }