Your workspace has several existing services that were successfully deployed from GitHub, so the integration has worked previously. This "No repositories found" issue is commonly caused by a pending GitHub App permission update that hasn't been accepted. Visit github.com/settings/installations, click "Configure" next to the Railway app, and check for any pending permission update banners at the top of the page - accept them if present. After that, go to the project canvas, click Add -> GitHub Repository -> Refresh to force a cache refresh, which should surface your repos.

I think I got the issue, earlier i have connected a different github account but then i uninstall github app in a hope that it will clear github connection on railway app also using some webhook but seems like it is not happening as i am not able to connect different github account within railway it is not allowing me to clear existing github connection and add a new one. Probably need to be handled via backend team

You can switch GitHub accounts by going to your Railway Account Settings, scrolling to the Connected Accounts section, and unlinking the current GitHub connection. Once unlinked, you can reconnect with your new GitHub account from the same page. After reconnecting, make sure the Railway GitHub App is installed on the new account at GitHub Settings -> Applications -> Railway App -> Configure -> Repository access.