Bug #31953
closed
Thumbnails (Backend) are not displayed
100%
Description
The generating of thumbnails in the backend fails, if there are any PHP-Warnings on the server.
Have a look in the file typo3/thumbs.php - the output is a image-file and if there any warnings of PHP the processing of the image fails.
I would suggest to disable the error_reporting in this case (in this file), because no user see the output of the error_reporting anyway.
Updated by Julian Hofmann over 12 years ago
Disabling error_reporting would not fully solve this problem.
You'll also get no image displayed, if in any included file whitespaces are before/after the -tags.
Updated by Gunther Schöbinger over 12 years ago
You are right, but in which cases would whitespaces be included?
The main problem is the use of error_reporting in a way that no error-message would ever appear. I would suggest:
- disabling the error_reporting
or alternatively
- inform the user about the problem
Thanks Gunther
Updated by Julian Hofmann over 12 years ago
You are right, but in which cases would whitespaces be included?
For example by some extensions which does not comply the CGL. Currently we had this effect with EXT:multishop. Whitespace could also be included by faulty realurl configurations - or by any other automatically included files from outside the TYPO3 Core.
Updated by Benjamin no-lastname-given over 11 years ago
i fixed it in my installation with:
t3lib/thumbs.php:
Line 41: ob_start();
Line 404: ob_end_clean();
Maybe we can get the output-buffer and if there ist any whitespace includen, then write to some error log / error message?
Updated by Francois Suter about 11 years ago
- Status changed from New to Accepted
- Assignee set to Francois Suter
- Target version set to 4.5.23
- TYPO3 Version changed from 4.6 to 4.7
I stumbled on the same issue up to version 4.7, but not on 6.0.
It seems related to some server settings, because the problem does not happen across all servers. However it seems safe to me to add a call to ob_clean() before the actual output, as this script is not supposed to be returning anything else than the image.
Updated by Gerrit Code Review about 11 years ago
- Status changed from Accepted to Under Review
Patch set 1 for branch master has been pushed to the review server.
It is available at https://review.typo3.org/18220
Updated by Francois Suter about 11 years ago
- Status changed from Under Review to Resolved
- % Done changed from 0 to 100
Applied in changeset 51774f94408a2d245590e7578162b4919e372203.
Updated by bokonet no-lastname-given almost 11 years ago
After updating TYPO3 CMS 4.5.25 to 4.5.27, the generating of thumbnails in the backend stopped working. The error is reproducible on 3 different servers (CentOS 6.4, PHP 5.3.3).
By opening http://domain.tld/typo3/thumbs.php?&dummy=1369910747&file=%2Fsrv%2Fwww%2Fvhosts%2Fdomain.tld%2Fhtdocs%2Ffileadmin%2FTest%2F200.jpg&md5sum=69ec2fa10f the following error messages occured:
in Chrome: Fehler 330 (net::ERR_CONTENT_DECODING_FAILED): Unbekannter Fehler.
in Firefox: Content-Encoding-Fehler. Die Webseite, die Sie öffnen möchten, kann nicht angezeigt werden, da sie eine ungültige oder unbekannte Form der Kompression verwendet.
The error does not occur when you remove "ob_clean();" from line 206 in t3lib/thumbs.php or when you add a ob_start() somewhere before that line.
Updated by Francois Suter almost 11 years ago
Hmm, this is weird. I tested it on a variety of servers myself. This seems to be dependent on some server configuration, but I don't know which. Already for us it solved a bug that appeared only on some servers.
Anyway you should open a separate issue and related it to this one, to give it the proper visibility.
Updated by Riccardo De Contardi over 6 years ago
- Status changed from Resolved to Closed