Thumbnail Creation
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Pcfactory
- Phoca Member

- Posts: 17
- Joined: 25 Feb 2012, 18:54
Re: Thumbnail Creation
Hi, yes, the entire Joomla platform is up to date, and I physically deleted all the "phoca gallery" folders after uninstalling it, but as soon as I reinstall it and click on "images," the thumbnail creation screen reopens. I don't know what to do.
- christine
- Phoca Hero

- Posts: 2993
- Joined: 28 Nov 2010, 17:20
Re: Thumbnail Creation
Hi,
What happens when you disable thumbnail generation?
Are thumbnails l, m, and s still listed under Media?
Kind regards,
Christine
What happens when you disable thumbnail generation?
Are thumbnails l, m, and s still listed under Media?
Kind regards,
Christine
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Pcfactory
- Phoca Member

- Posts: 17
- Joined: 25 Feb 2012, 18:54
Re: Thumbnail Creation
Hi, when I reinstall Phoca gallery there are no more images in any folder, it continues to try to create the thumbnail of the same image, even disabling the creation of thumbnails.
- christine
- Phoca Hero

- Posts: 2993
- Joined: 28 Nov 2010, 17:20
Re: Thumbnail Creation
Hi,
Hmm, if: "...it continues to try to create the thumbnail..."
then there must still be thumbnails somewhere?
Again: Are thumbnails l, m, and s still listed under Media?
Caches?
Kind regards
Christine
Hmm, if: "...it continues to try to create the thumbnail..."
then there must still be thumbnails somewhere?
Again: Are thumbnails l, m, and s still listed under Media?
Caches?
Kind regards
Christine
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Pcfactory
- Phoca Member

- Posts: 17
- Joined: 25 Feb 2012, 18:54
Re: Thumbnail Creation
Hi, there's nothing related to "Phoca Gallery" under media. I deleted everything. I also cleared the cache.
- christine
- Phoca Hero

- Posts: 2993
- Joined: 28 Nov 2010, 17:20
Re: Thumbnail Creation
Hi,
Perhaps there's still data from Phoca (images) in the database?
I'm out of ideas at the moment ... Maybe:
Would be useful, to get the complete Call Stack.
Code:
public $error_reporting = 'maximum';
public $debug = true;
Note that the top line is not necessarily the cause of the error, nor is it necessarily the code location that needs to be corrected.
Often, the lines below will indicate an extension that caused the error, e.g. by sending an incorrectly worded request.
Sometimes it can be useful that you temporarily rename the error.php file in the template folder, if it exists, to e.g. errorxxxxxx.php. This will ensure that Joomla's error page is used.
Kind regards,
Christine
Perhaps there's still data from Phoca (images) in the database?
I'm out of ideas at the moment ... Maybe:
Would be useful, to get the complete Call Stack.
Code:
public $error_reporting = 'maximum';
public $debug = true;
Note that the top line is not necessarily the cause of the error, nor is it necessarily the code location that needs to be corrected.
Often, the lines below will indicate an extension that caused the error, e.g. by sending an incorrectly worded request.
Sometimes it can be useful that you temporarily rename the error.php file in the template folder, if it exists, to e.g. errorxxxxxx.php. This will ensure that Joomla's error page is used.
Kind regards,
Christine
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Pcfactory
- Phoca Member

- Posts: 17
- Joined: 25 Feb 2012, 18:54
Re: Thumbnail Creation
Hi, debugging and error handling was already set up as you suggested. I also renamed the "template error.ph" file. I reinstalled Phoca Gallery, and when I went to "Images," it didn't crash this time. So I started creating categories and uploading images. Obviously, I created the category and then added the images. The first two categories and their corresponding images were added without any problems, including creating the thumbnails. Everything crashed when I uploaded the photos from the third category while creating the thumbnails. Why? Where do I see any errors?
https://imgur.com/a/6hmXpWc
https://imgur.com/a/6hmXpWc
- Jan
- Phoca Hero

- Posts: 49371
- Joined: 10 Nov 2007, 18:23
- Location: Czech Republic
- Contact:
Re: Thumbnail Creation
Hi, this could mean that in third category, there could be some image which cannot be managed by your server (GD library) e.g. because it is too large, not right image, etc. When the script stops, just try to check the image where the script stopped.
Jan
Jan
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bosino3809
- Phoca Newbie

- Posts: 2
- Joined: 24 Feb 2026, 12:38
Re: Thumbnail Creation
Good morning 👍 If your thumbnail generation process is freezing without errors, it’s usually caused by either server resource limits or a problem with the image processing library rather than the cache itself.
First, check whether your hosting environment is hitting memory or execution time limits (very common with bulk thumbnail creation). If you have access, try increasing PHP limits like memory_limit and max_execution_time. Also verify that your image processing extension (GD or ImageMagick) is properly installed and not partially broken.
Another useful test is to try regenerating thumbnails in smaller batches—if that works, it confirms a resource bottleneck. If it still freezes, check server logs directly, since phpBB debug output often misses fatal background issues.
First, check whether your hosting environment is hitting memory or execution time limits (very common with bulk thumbnail creation). If you have access, try increasing PHP limits like memory_limit and max_execution_time. Also verify that your image processing extension (GD or ImageMagick) is properly installed and not partially broken.
Another useful test is to try regenerating thumbnails in smaller batches—if that works, it confirms a resource bottleneck. If it still freezes, check server logs directly, since phpBB debug output often misses fatal background issues.