Image preview not shown

[eboileau]

Is there an existing issue for this?

• I checked the documentation and found no answer
• This bug has not already been reported

A clear and concise description of what the issue is.

The dataset curator shows a default display, but on the dataset explorer, there is No preview image found. This may be related to this issue.

Output or error messages.

The logs report

[Fri Jan 26 16:13:22.588563 2024] [cgi:error] [pid 2471557] [client 10.250.140.13:45038] AH01215: File to static image does not exist.  Skipping attempted symlink.: /var/www/cgi/save_default_display.cgi, referer: https://dhart.dieterichlab.org/dataset_curator.html

Anything else?

No response

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Firefox, Chrome

[eboileau]

In save_default_display.cgi, the file name is filename = os.path.join(DATASET_PREVIEWS_DIR, "{}.{}.png".format(dataset_id, display_id)). display_id is not None, e.g.

MariaDB [dhart_db]> SELECT * FROM dataset_preference WHERE dataset_id = "c11d7b51-de77-3115-f3c9-d5718c998a3b";
+---------+--------------------------------------+------------+--------------+
| user_id | dataset_id                           | display_id | is_multigene |
+---------+--------------------------------------+------------+--------------+
|      39 | c11d7b51-de77-3115-f3c9-d5718c998a3b |         79 |            0 |
+---------+--------------------------------------+------------+--------------+

but

ls img/dataset_previews/ | grep c11d7b51-de77-3115-f3c9-d5718c998a3b
c11d7b51-de77-3115-f3c9-d5718c998a3b.None.png

When is the image saved to disk? In save_dataset_display.cgi. Either display_id exists, or is created, and image is written to disk. Logs don't show errors related to this.

But I cannot easily reproduce this, latest attempts worked out. There seem to be some obsolete image files lying under img/dataset_previews/ which do not match any display in the curator.