Dear Martin! [image: image.png] In the attached dev-tools in the browser, this means that the service is not reached by your front end, or it is your web server configurations blocking the access. What web server are you currently using on your dev server?
On Thu, Jun 18, 2026 at 4:41 PM Martin Volný <[email protected]> wrote: > Hello DSpace community, > I’m reaching out with a question about installation DSpace 9.2 and > troubleshooting an issue. > This is our test environment and my first time practical experience, so I > apologize in advance for any trivial mistake I may have missed. > We have DSpace in version 9.2, where are hosted backend and frontend on > the same server. We are not not using HTTPS. > When I will open user Interface, web pages are showing, but a few second > later it is redirect to error message 500 > Error message: > "500 Service unavailable The server is temporarily unable to service your > request due to maintenance downtime or capacity problems. Please try again > later." > I cannot log in to the system; only the DSpace language locale can be > changed. > I checked possible problems on wiki webpages, but I received from console > 200. > > REST API from the UI from the command-line > npm run test:rest > > ubuntu@dm4ai-test:/opt/dspace-angular$ npm run test:rest > > > [email protected] test:rest > > ts-node --project ./tsconfig.ts-node.json scripts/test-rest.ts > > Building production app config > Overriding app config with /opt/dspace-angular/config/config.yml > Unable to find env config file at > /opt/dspace-angular/config/config.production.yaml > ...Testing connection to REST API at http://localhost:8080/server/api... > > RESPONSE: 200 > > Checking JSON returned for validity... > "dspaceVersion" = DSpace 9.2 > "dspaceUI" = http://localhost:4000 > "dspaceServer" = http://localhost:8080/server > "dspaceServer" property matches UI's "rest" config? true > Does "/api" endpoint have HAL links ("_links" section)? true > ubuntu@dm4ai-test:/opt/dspace-angular$ > > Server Api is accesible > http://localhost:8080/server/api > > http://localhost:8983/solr/#/ is also ok > In developer tools is error message: > [image: Dspace_01.png] > > > Thank you for any advice and tips on what I should check next and where to > look. > > -- > All messages to this mailing list should adhere to the Code of Conduct: > https://lyrasis.org/code-of-conduct/ > --- > 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 [email protected]. > To view this discussion visit > https://groups.google.com/d/msgid/dspace-tech/c1519b0b-274a-4638-9055-7c76c60b5807n%40googlegroups.com > <https://groups.google.com/d/msgid/dspace-tech/c1519b0b-274a-4638-9055-7c76c60b5807n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- All messages to this mailing list should adhere to the Code of Conduct: https://lyrasis.org/code-of-conduct/ --- 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 [email protected]. To view this discussion visit https://groups.google.com/d/msgid/dspace-tech/CA%2BLKazom3rBdZsEKmcAcjedKeNAP0v9DEPithbuTJXQ5VhePkA%40mail.gmail.com.
