Fatal error: Uncaught TypeError: strtotime(): Argument #2 ($baseTimestamp) must be of type ?int, string given in /in/otmQo:2
Stack trace:
#0 /in/otmQo(2): strtotime('+40 minutes', '2014-10-23 17:3...')
#1 {main}
thrown in /in/otmQo on line 2
Process exited with code 255.