The container is not at the listed coords. You have to complete the Adventure Lab cache Caboolture Cemetery https://adventurelab.page.link/o74R first to work out the final coords. Don't forget to bring a TOTT to retrieve the cache and a pen to sign the log.
S 27 AB.CDE
E 152 FG.HIJ
Have fun!
Lbh arrq n GBGG.