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fix PHP 8.0 TypeError: array_keys(): Argument #1 ($array) must be of type array, null given

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This commit is contained in:
Ralf Becker 2021-11-15 11:55:24 +01:00
parent 65ebea136e
commit efa66b72fc
1 changed files with 1 additions and 1 deletions
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2
calendar/inc/class.calendar_groupdav.inc.php
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@ -1226,7 +1226,7 @@ class calendar_groupdav extends Api\CalDAV\Handler
$xml->startDocument('1.0', 'UTF-8');
$xml->startElementNs('C', 'schedule-response', Api\CalDAV::CALDAV);
foreach(array_keys($event['participants']) as $uid)
foreach(array_keys($event['participants'] ?? []) as $uid)
{
$xml->startElementNs('C', 'response', null);