When trying to open pdf file via webbrowser -> cURL error 3 error page

When trying to open a pdf file via the webbrowser, I am getting a page with the errorcURL error 3 error page.
I am running nextcloud 20.0.4 as a snap on ubuntu server

Everthing goes fine if I open the same pdf file via the app on a android device.

I did not change anything on my server except installing the latest app updates and updates on my server.

Ask a support agent what the most often answer of a user is :wink:

Check the Nextcloud log file for any related errors.


I understand your reasoning. But it’s its true did not change anything except what I mentioned.
For the moment I can not find error’s in the logs. In which logs could I check?

As I wrote, check the “Nextcloud log file” which by default should be found in the Nextcloud data directory, except you’ve configured a different location.

Here the output on the log but this gives the same message as in the webbrowser errorcURL error 3

leId=69515&requesttoken=eV2B4kZI0iDwQZJTyNEvN4uvweGNT8HvIr55sc%2BIReA%3D%3ASTS5oCJ9txayMMMkpalNAOXfjdm4Pq6YUfobx4b7DJQ%3D&path=%2Frekeningen%2F2021-01-proximus.pdf",“message”:{“Exception”:“GuzzleHttp\Exception\RequestException”,“Message”:“cURL error 3: malformed (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)”,“Code”:0,“Trace”:[{“file”:"/snap/nextcloud/25647/htdocs/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php",“line”:155,“function”:“createRejection”,“class”:“GuzzleHttp\Handler\CurlFactory”,“type”:"::",“args”:[{“sink”:{“class”:“GuzzleHttp\Psr7\Stream”},“headers”:[],“response”:null,“request”:{“class”:“GuzzleHttp\Psr7\Request”},“options”:{“verify”:"/var/snap/nextcloud/common/nextcloud/data/files_external/rootcerts.crt",“timeout”:45,“nextcloud”:{“allow_local_address”:true},“synchronous”:true,“handler”:{“class”:“GuzzleHttp\HandlerStack”},“allow_redirects”:{“max”:5,"protocols"