Hey y’all! I’m a relatively new plant parent and I just got this montesara 2 weeks ago. He’s been doing fine for the most part- has new leaf growth and seems to like the spot I’ve put him in. I’ve included some photos for context overall But I’m reaching out because I noticed this leaf in with the yellowing spot a few days ago and wasn’t sure what the problem is. Is this an infection, under/overwatering? The current pot it’s in has no drainage (the previous owners gave him to me in this and I haven’t reported into pot with drainage, so that could be the problem for sure)