Hello,

Thanks for reaching out to us. Could you please share temporary administrator access to your Joomla backend? You can provide the credentials securely in the hidden content section. Also, please take a full backup of your site before we make any changes.

Once I have access, I’ll investigate further and see what’s causing the issue. Let me know once you’ve shared the details!

Best regards,

Hello,

see in hidden content the credentials.

Regards George

Hi,

I checked the PHP info and error on your site. The cURL extension is not installed on your server, and that is what causes the "is not valid header name" error during the Joomla update. Your site itself is fine.

Please contact your hosting administrator and ask them to install the PHP cURL extension (php8.3-curl) and restart Apache. Once that is done, retry the update and it should work.

Thanks

Worked,

thanks a lot

George

It’s great to hear that your issue has been resolved. If everything is working fine now, please mark the question as complete by accepting any of our answers.

Thank you!