Use an UV/black light, it helps locate freon leaks, this crimp on this discharge hose failed, pretty common on Toyotas with the 4.0l motors, never use any of that stop leak freon, it does more harm to the entire system and gums it up.
View attachment 35234
View attachment 35235
View attachment 35236
do LED black light work for this too I’ve seen them available and wanted to try this but wasn’t sure. My 4.0 has a leak somewhere and I haven’t troubleshot it yet.