The cache is not at the posted coordinates, but the start to the companion Adventure Lab is.
Please complete the Cabbage and Krog AL to reveal the final coords for this bonus cache, located not too far from where the AL ends.
Take your time and enjoy the wonderful murals of Cabbagetown and Krog Street Tunnel.
The Adventure Lab™ logo is a copyright and trademark of Groundspeak, Inc. DBA Geocaching. Used with permission.