Invalid argument supplied for foreach() and PHP Undefined index: abo at

[Bullnados]

I got that two erros after opening Calendar+. Fresh OC 8.2. Reinstalling CalenderPlus didn't help.

Invalid argument supplied for foreach() at /www/htdocs/w0132b0b/Subdomains/krakadu/cloud.krakadu/apps/calendarplus/templates/navigationleft.php#106
PHP Undefined index: abo at /www/htdocs/w0132b0b/Subdomains/krakadu/cloud.krakadu/apps/calendarplus/templates/navigationleft.php#106

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[TheMrApostel]

Same here.

[DaytonaAsh]

Same issue here.

New install of 8.2 on CentOS7.
Manually installed Calendar Plus and Tasks Plus due to "No Internet Access" issues with CentOS / Curl issue.

These apps look like a great solution, but I can't get tasks to show up in the calendar and can't share tasks between users. Assume this error is the cause.

Error PHP Invalid argument supplied for foreach() at /var/www/html/owncloud/apps/calendarplus/templates/navigationleft.php#106
Error PHP Undefined index: abo at /var/www/html/owncloud/apps/calendarplus/templates/navigationleft.php#106

uname:
Linux 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

PHP Version:
PHP 5.4.16 (cli) (built: Jun 23 2015 21:17:27)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies

[garking]

Just upgraded to 8.2 from 8.1... identical issue