Broken transmission pan bolt
Only if it is not leaking trannys fluid.
put a bit of sealant under the gasket, should pe ok. best thing, take the pan off, put a vice grip on the bolt (if you can grab it) and replace it. try with a screw driver/cisel maybe or extractor if it is hard to remove.
Drill and retap is the sure way...
Looking for a Used Corolla in your area?
CarGurus has 54,183 nationwide Corolla listings starting at $1,500.
Search Toyota Corolla Questions
Toyota Corolla Experts