Call to undefined function App\Http\Controllers\curl_init()

Can you check that the cURL extension is loaded - phpinfo() in a route closure or php -m on server's CLI?

It appears only at PHP Credits section

It looks more likely a syntax error, check where function is being called because that \curl_init() method without a class looks off

It works perfectly on my dev computer. Can´t be syntax error...

Run php -m | grep curl and paste the output please. You may have the CURL library installed but not the extension in PHP just as @tykus said.

sudo apt-get install php-curl or similar then systemctl restart apache or similar

if you have enough privilegies and check /etc/php<maybe a version number>/php.ini if you have that module enabled.

Thanks, @thureos , It is working now. I realized that I was PHP 7.2 and PHP 7.3 installed at the same time. So I uninstalled both and reinstalled only 7.3

It works perfectly on my dev computer. Can´t be syntax error...

That doesn't mean anything though, unless your php version is exactly the same on both dev and production and using the exact same php.ini in both places, and using the same OS/version in both places. Are they? Individual commands can be disabled via php.ini, so you can't just make an assumption like that unless environments are identical.

@cronix , you´re right. But I think this is not the problem though. Still working and I´ll let you guys know

All right. Now it is working. I realised that my server had PHP 7.2 and 7.3 at same time. Uninstall both and reinstalled 7.3. Now is working like a breeze! Thank You all!