PHP Fatal Error while creating thumbs

[pascaltey]

Hello,

BuZoN is working good until i upload a picture and a thumbnail has to be created. After uploading a picture i cannot see the folder structure anymore:

Before uploading:

After Uploading a picture:

Apache Error Log:

[Mon Oct 07 17:07:20.143506 2019] [php7:error] [pid 4005] [client xxx:59830] PHP Fatal error: Uncaught Error: Call to undefined function exif_read_data() in /srv/http/fileshare/core/auto_thumb.php:86\nStack trace:\n#0 /srv/http/fileshare/core/listfiles.php(123): auto_thumb('uploads/pascal/...', 64, 64)\n#1 /srv/http/fileshare/templates/default/admin.php(167): include('/srv/http/files...')\n#2 /srv/http/fileshare/index.php(29): include('/srv/http/files...')\n#3 {main}\n thrown in /srv/http/fileshare/core/auto_thumb.php on line 86, referer: http://xxx/fileshare/index.php?p=admin&token=747404d2b35a5948ff51e2122497904db9fa631efbc5b7f787a899dc0cf6e0005768472e8e21fa0968295a72f89ed7f3b24ad18b1be7c3ce755747c3431f57ef

How can i fix this?

Pascal