Thread:Project:Support desk/500 Internal Server Error after Migration

Hello,

I just moved my Wiki and its Content (MediaWiki 1.2.1.1) from Ubuntu 13.04 + Apache 2.2.+ MySQL 5.5.31 to MediaWiki 1.2.1.1 + Debian 7 + nginX 1.2.1 + MySQL 5.5.31.

What I did during migration:
 * I kopied the images directory from Ubuntu to Debian.
 * I made a backup of MySQL of the MediaWiki on Ubuntu
 * I put the backup on Debian with same MySQL
 * I moved the files from /var/www (old) to /data/www but with symlink /var/www -> /data/www (no problems)

I can work with MediaWiki after migration. I can upload images and other files.

All the textual content is available, but if I click on upload and when I pick some files I have uploaded on the old Ubuntu MediaWiki then I get the 500 Internal Server Error.

Checking up the directory using find results in finding the file. Example:
 * Myfile.zip is linked to 192.168.0.1/images/c/cd/Myfile.zip in wiki (onmouse over it is shown).
 * clicking on the link causes Err 500
 * find says, the file is in /data/www/images/Myfile.zip (I used console with pwd=/ checking the /data dir directly, but for the webbrowser it is also /var/www, because of the symlink)

EDIT: I also do not get any preview made by imageimagick (even it is installed). I get a error message, no image defined .... convertimagecommand/3044.

Does anyone have an idea, what could be the source of the problem?

Thanks, Marcus