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-rw-r--r--lib/private/Collaboration/Collaborators/MailPlugin.php3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/private/Collaboration/Collaborators/MailPlugin.php b/lib/private/Collaboration/Collaborators/MailPlugin.php
index 55e3945ace2..730be14a1d1 100644
--- a/lib/private/Collaboration/Collaborators/MailPlugin.php
+++ b/lib/private/Collaboration/Collaborators/MailPlugin.php
@@ -159,6 +159,9 @@ class MailPlugin implements ISearchPlugin {
if ($this->shareeEnumeration) {
try {
+ if (!isset($contact['CLOUD'])) {
+ continue;
+ }
$cloud = $this->cloudIdManager->resolveCloudId($contact['CLOUD'][0] ?? '');
} catch (\InvalidArgumentException $e) {
continue;