Related problem: https://help.nextcloud.com/t/how-to-install-activate-apps-like-mail-contacts-and-calendar/5378/10
This seems to be a current problem with the new app store.
Same here… But i’m still polling the (old) owncloud store.
Could not get application: cURL error 60: SSL certificate problem: unable to get local issuer certificate
wwe: close old topics