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MaRDI4NFDI / portal-compose

docker-composer repo for mardi
https://portal.mardi4nfdi.de
GNU General Public License v3.0
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Federated queries on the MaRDI endpoint yield nginx error #552

Closed Daniel-Mietchen closed 3 months ago

Daniel-Mietchen commented 3 months ago

Describe the bug

This is the error message:

<!DOCTYPE html>
<html>
<head>
<title>Error</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>An error occurred.</h1>
<p>Sorry, the page you are looking for is currently unavailable.<br/>
Please try again later.</p>
<p>If you are the system administrator of this resource then you should check
the error log for details.</p>
<p><em>Faithfully yours, nginx.</em></p>
</body>
</html>

Expected behavior

The queries should run without errors and give useful results, as they did before.

To Reproduce Steps to reproduce the behavior:

  1. Run a SPARQL query that federates MaRDI with Wikidata (example) or FactGrid (example)
  2. See error

Screenshots Screenshot (1620)

Additional context Non-federated queries (example) seem to work as usual.

Checklist for this issue:

Daniel-Mietchen commented 3 months ago

Here is another ticket on this nginx error, along with some useful comments: https://www.reddit.com/r/devops/comments/abw6ss/nginx_weird_error_help_been_at_this_longer_than/?rdt=33593 .

physikerwelt commented 3 months ago

There are two issues. One, the nginx error is not helpful, I would tend to ignore it for now and use the interal SPARQL interface https://wdqs.portal.mardi4nfdi.de/bigdata/#query instead. I started this moments ago, but the query keeps running...

physikerwelt commented 3 months ago

Can you maybe provide a minimal example?

physikerwelt commented 3 months ago

The queries are still running...

physikerwelt commented 3 months ago

I restarted the wdqs service

ghcr.io/wmde/wikibase/wdqs:dev-9186217118

and now it works nicely. Screenshot 2024-08-26 at 19 59 31