Contact app is broken

[ghost]

Dear Nextclouders,
i ran an upgrade from Nextcloud 13.0.5 to 14 beta 1.
It works like a charme and no errors (except the apps which aren't compatible yet) or exceptions were thrown. Then i logged on as my user and opened the contact app. The following errors are thrown:

Content Security Policy: Die Einstellungen der Seite haben das Laden einer Ressource auf https://mynextcloud/apps/files/ blockiert ("script-src").

<script>-Quell-URI ist in diesem Dokument nicht erlaubt: "https://mynextcloud/apps/notifications/js/notifications.js?v=ceca7608-139".

Error: searchCallback must be a function
initialize@https://mynextcloud/core/search/js/search.js?v=ceca7608-139:55:11
Search@https://mynextcloud/core/search/js/search.js?v=ceca7608-139:37:3
@https://mynextcloud/apps/contacts/js/public/script.js?v=ceca7608-139:2799:16
instantiate@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:42:109
fb/n.$provide.service</<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:42:403
invoke@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:42:6
f/<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:39:203
invoke@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:42:6
fb/H<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:43:308
d@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:41:1
e@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:41:242
invoke@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:41:327
tf/this.$get</</<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:91:266
n@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:66:136
ia/<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:78:96
e/<@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:132:434
$eval@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:147:65
$digest@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:144:123
$apply@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:147:361
l@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:99:192
K@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:103:376
tg/</N.onload@https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139:104:338
angular.min.js:119:446
f/<
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:119:446
vf/this.$get</<
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:92:42
e/<
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:133:1
$eval
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:147:65
$digest
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:144:123
$apply
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:147:361
l
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:99:192
K
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:103:376
tg/</N.onload
https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js:104:338

Source-Map-Fehler: TypeError: NetworkError when attempting to fetch resource.
Ressourcen-Adresse: https://mynextcloud/apps/contacts/js/vendor/angular/angular.min.js?v=ceca7608-139
Source-Map-Adresse: angular.min.js.map[Weitere Informationen]

No contacts are shown, an empty page appears:

Same on a vanilla installation:

System environment:
Ubuntu 18.04.1 AMD64
NGINX 1.15.2
PHP7.2.8
MariaDB10.3.8
Redis

Please let me know how to assist you.
Cheers, Carsten

[ghost]

duplicate: #10429

[nextcloud-bot]

GitMate.io thinks possibly related issues are #9693 (Logcondition broken), #6482 (New NC instance, Calendar & Contacts apps broken, no shared Cals nor Cards), #1537 (CardDAV / DAVdroid / Contacts-App issue), #4774 (Clicking contacts should open their entry in the contacts app), and #3697 (WebDav Appears Broken).