MySQL ERROR:

Error Number: 3685

Description: Illegal argument to a regular expression.

Query: SELECT p.page_name, n.namespace_label FROM exp_wiki_page AS p LEFT JOIN exp_wiki_namespaces AS n ON n.namespace_name = p.page_namespace LEFT JOIN exp_wiki_revisions AS r ON r.revision_id = p.last_revision_id WHERE r.page_content REGEXP '\\[\\[hacked[[:>:]].*\\]\\]' AND p.wiki_id = '1'