Codeigniter, Ionize version 0.9.7
When editing an article you will see the php error (image above).
line 934 application/controllers/admin/article.php
if ($context['link'] !='')
change to
if (isset($context['link'] && $context['link'] !='')
Will solve the problem.
UPDATE:
I’ve just noticed that in the github version changes have been made
if ( ! empty($context['link']) )
Which does work