I had it too.
I know not much PHP, but I red the error line and edit the php file at line mentioned, and add comment tag to deactivate the module (line 61 and 65) , it works, no more error in the log. I test the plugin alright and its perfect.
61 /*
62 function form () {
63 _e(‘No options available.’, AEC_NAME);
64 }
65 */
