: Never leave hardcoded references to localhost:11501 in your code when deploying to live staging or production environments. Use environment variables (like .env files) so your code automatically switches from localhost:11501 during testing to a secure public URL (like https://yourdomain.com ) when pushed live. Conclusion
To successfully load content at this address, you must first have a server-side application active on your machine that is configured to use that port: Start your local server: localhost11501
: Ensure the specific application (e.g., the Digital Signer or NetWorker service) is actually running in your system's background task manager. : Never leave hardcoded references to localhost:11501 in