I just installed a new nethserver (7.7.1908) System with webtop (1.4.0-1). All patches are installed. I created a user and setup an Exchange Connection to Webtop from my iPhone IOS 13.1.3.
Mail, Contacts and Calendar are syncing perfectly but tasks not. Initially no tasks were synced in both directions.
Now, when I create a new task in the web-frontend it´s still not synced, but when I disable syncing on iPhone and delete all iphone tasks, then switch on syncing again, the last task created in the webfrontend is synced to the iPhone. All other Tasks are still only visible on the webfrontend.
Is this a known bug, or am I doing something wrong?
Now I found the error log:
BackendTasks - WT\Client\Tasks\ApiExcept ion:  Server error:
POST http://localhost:58080/webtop/api/com.sonicle.webtop.tasks/v1/eas/folders/1/message s resulted in a
500 Internal Server Error response: