500 Service Unavailable in Dspace 7.6.1

[Nadeem Sohail]

Dear Professional Colleagues,

I hope this message finds you well.

I am reaching out to seek guidance regarding an issue I am encountering with my DSpace 7.6.1 installation on Ubuntu 22.04. After configuring all the necessary requirements, the platform is functioning smoothly within our local area network (LAN) via the domain name: http://digitallibrary.thecityschool.edu.pk:4000/500. However, when attempting to connect from the World Wide Web (WWW), I am encountering the following error:

"500
Service Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."

I have thoroughly reviewed the setup and am uncertain of the cause of this issue. Therefore, I kindly request your expertise and assistance in resolving it. Any insights or suggestions you could provide would be immensely appreciated.

Thank you very much for your time and consideration. I look forward to your guidance and support.

With kindest regards,

............................................

Nadeem Sohail – Manager Libraries  Head Office - The City School Network 31 Industrial Area, Gurumangat Road, Gulberg III, Lahore  +92 (42) 111 444 123 – Ext: 394 www.thecityschool.edu.pk

[Victorhugo Bisangwa]

Dear Nadeem,

Kindly do an inspect element on the browser(while accessing from both WWW and locally) and check the console tab for errors that are displayed. This will be helpful in troubleshooting.

[DSpace Technical Support]

Hi,

Please also see our Troubleshooting Guide for DSpace 7 (and above): https://wiki.lyrasis.org/display/DSPACE/Troubleshoot+an+error#Troubleshootanerror-DSpace7.x(orabove)

This 500 exception is a general error that is also documented in our "Common Installation Problems".  Usually it's a misconfiguration or communication issue between your UI and REST API.  See also the hints at https://wiki.lyrasis.org/display/DSDOC7x/Installing+DSpace#InstallingDSpace-%22500ServiceUnavailable%22fromtheUserInterface

Tim

[Abdellah Adghar]

Yes right.the problem is between backend and frontend.

--
All messages to this mailing list should adhere to the Code of Conduct: https://www.lyrasis.org/about/Pages/Code-of-Conduct.aspx
---
You received this message because you are subscribed to the Google Groups "DSpace Technical Support" group.
To unsubscribe from this group and stop receiving emails from it, send an email to dspace-tech...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/dspace-tech/2e147a39-4cbe-4112-b8f7-c412ef7d575dn%40googlegroups.com.

[Israel Irizarry]

Hey everyone!

I am experiencing the same issue, but I cannot find the solution or cause. I have tried everything on the hints site, and I am still getting the 500 error. Yarn test:rest comes out all good, my local.cfg and config.prod.yml files looks good, and I am running under HTTPS on both my /server and my UI sides. I know the problem has to do with the communication the frontend is having with the backend, but I cannot seem to find how to solve the issue. When checking the console in my browser, I do see the "No _links section found at..." error from User Interface, but when I add /server/api, all the links show up just fine. I have pinged the server and have fiddled around with all sorts of configurations, and nothing has worked. Any ideas?

Thanks!

[Steve Michaels]

When I looked at your instance, it seems to be working fine: http://digitallibrary.thecityschool.edu.pk:4000/home

http://digitallibrary.thecityschool.edu.pk:4000/500 is the address of your Server Error Page.

I did have a similar issue, but I did find that our server couldn't find itself by the web domain name (repository.westernsem.edu).  When I added that domain name to the /etc/hosts file, the problem resolved itself.