After upgrading to UCS4.3 yesterday and wading through the varoious problems making Kopano work again Ihave one remaining problem. Selecting Nextcloud under files displays an error claiming it needs php-curl
Running a2enmod php-curl states not found.
Needed to install it “apt-get install php-curl”
And restart apache
Thanks for the report. This will be fixed in the next Kopano App update that is expected in early May.