Error uploading avatar images

ckubs

Put on hold a project where I needed to have a forum but, also a news section on front. Till yesterday, when checking Extiverse and noticed someone built a "blog" extension wich suits my needs. Everything is almost buttery smooth with the flarum instalation except that I get "Oops! Something went wrong. Please reload the page and try again." when I want to upload profile avatars. Enabling debug mode I get:

Error: Call to undefined function GuzzleHttp\Psr7\stream_for() in /home/admin/web/mywebsite.com/public_html/vendor/intervention/image/src/Intervention/Image/Commands/StreamCommand.php:19

Don't know what could be wrong there. I'm on Ubuntu 20.04 with Nginx and PHP 7.4. Thank you for any help.

As GreXXL mentioned, the temporary workaround given in the link he provided should suffice until this is fixed officially on the Intervention side. We are also looking into a temporary solution within Flarum core itself in the meantime, so know that we are completely aware of the issue at hand 😉

ckubs

@GreXXL Ralkage Thank you, working now. 😃
addtocartips your solution worked at first too but, unfortunatelly, I'm still installing various things and the file is getting changed by the composer.