There was a problem with the MySQL Query: UPDATE supertracker set last_click='2018-09-24 21:19:12', exit_page='/5.2_Features_of_'well_formed'_signs-i-451.html', num_clicks='39', pages_viewed='', properties_viewed='' where tracking_id='473051'
The result was : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'well_formed'_signs-i-451.html', num_clicks='39', pages_viewed='', properties_vie' at line 1