Problems with Contact App

I have problems with carddav, in the web app, contacts, it doesn’t show me anything. And with DavDroid, I have problems I have synchronizing, the same issue with KDE Kontact.
Thank for the help!
The log:

Exception: {“Message”:“Only vCard 2.1, 3.0 and 4.0 are supported for the
input data”,“Exception”:“InvalidArgumentException”,“Code”:0,“Trace”:"#0

/var/www/nextcloud/3rdparty/sabre/vobject/lib/Component/VCard.php(175):

Sabre\VObject\VCardConverter->convert(Object(Sabre\VObject\Component\VCard),
5)\n#1
/var/www/nextcloud/3rdparty/sabre/dav/lib/CardDAV/Plugin.php(801):
Sabre\VObject\Component\VCard->convert(5)\n#2
/var/www/nextcloud/3rdparty/sabre/dav/lib/CardDAV/Plugin.php(259):
Sabre\CardDAV\Plugin->convertVCard(‘BEGIN:VCARD\r\nEM…’,
‘vcard3’)\n#3
/var/www/nextcloud/3rdparty/sabre/dav/lib/CardDAV/Plugin.php(198):

Sabre\CardDAV\Plugin->addressbookMultiGetReport(Object(Sabre\CardDAV\Xml\Request\AddressBookMultiGetReport))\n#4
[internal function]:
Sabre\CardDAV\Plugin->report(’{urn:ietf:param…’,
Object(Sabre\CardDAV\Xml\Request\AddressBookMultiGetReport),
‘addressbooks/ca…’)\n#5
/var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php(105):
call_user_func_array(Array, Array)\n#6
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php(716):
Sabre\Event\EventEmitter->emit(‘report’, Array)\n#7 [internal
function]:
Sabre\DAV\CorePlugin->httpReport(Object(Sabre\HTTP\Request),
Object(Sabre\HTTP\Response))\n#8
/var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php(105):
call_user_func_array(Array, Array)\n#9
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php(459):
Sabre\Event\EventEmitter->emit(‘method:REPORT’, Array)\n#10
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php(248):
Sabre\DAV\Server->invokeMethod(Object(Sabre\HTTP\Request),
Object(Sabre\HTTP\Response))\n#11
/var/www/nextcloud/apps/dav/appinfo/v1/carddav.php(86):
Sabre\DAV\Server->exec()\n#12
/var/www/nextcloud/remote.php(165):
require_once(’/var/www/nextcl…’)\n#13
{main}",“File”:"/var/www/nextcloud/3rdparty/sabre/vobject/lib/VCardConverter.php",“Line”:40,“User”:“carlos”}

It’s probably the best to report this on the bugtracker https://github.com/owncloud/contacts and also attach a sample contact where the creation fails.

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