@ibims hatte grad dasselbe Problem, hab es gelöst mit:diff --git a/src/Content/Conversation/Factory/UserDefinedChannel.php b/src/Content/Conversation/Factory/UserDefinedChannel.php
index 208941c076..0063dde49a 100644
--- a/src/Content/Conversation/Factory/UserDefinedChannel.php
+++ b/src/Content/Conversation/Factory/UserDefinedChannel.php
@@ -23,6 +23,10 @@ final class UserDefinedChannel extends Timeline implements ICanCreateFromTableRo
$row['languages'] = unserialize($row['languages']);
}

+ if (!is_array($row['languages'])) {
+ $row['languages'] = [];
+ }
+
return new Entity\UserDefinedChannel(
$row['id'] ?? null,
$row['label'],
@@ -35,7 +39,7 @@ final class UserDefinedChannel extends Timeline implements ICanCreateFromTableRo
$row['full-text-search'] ?? null,
$row['media-type'] ?? null,
$row['circle'] ?? null,
- $row['languages'] ?? null,
+ $row['languages'],
$row['publish'] ?? null,
$row['valid'] ?? null,
$row['min-size'] ?? null,