Ai1ec V2.3.0 & PHP 5.2.x or lower (Line 451 ics.php)

The code for V2.3.0 of Ai1ec gives an error on installs of PHP where the PHP version number is less than 5.3.

If you’re running V5.3+ you won’t see an issue.

If you’re running PHP 5.2.X or lower, the following explains how to solve the problem.

To fix this, once you’ve updated to Ai1ec 2.3.0, edit:
all-in-one-event-calendar/lib/calendar-feed/ics.php

And change line 451 from:

'feed_name' => $row->feed_name ?: $row->feed_url,

To:

'feed_name' => $row->feed_name ? $row->feed_name : $row->feed_url,

Note: I’ve just got a reply from Jeff (by email) that a hot-fix release will be out soon that contains this fix. This should at least allow the early adopters running older versions of PHP to get their sites up and running.

https://www.ads-software.com/plugins/all-in-one-event-calendar/