Is it 'damping off?'

persoanlly, i would take it out, and wash it off in hydrogen peroxide. you can use the stuff from the store look on the bottle and make sure of the percentage it should be between 2 and 4 % i would cut that in 1/4 at least (dilute 1 part HP with 4 or 5 parts water) use an old toothbrush, or something to gently rub the fungus off let is sit in solution for 2-3 mins rinse well... re-plant

No big leaves on mine this year either. I did have anthracnose, though, and pretty bad for awhile: I had the tree inside a round plastic greenhouse and leaving the door open during the daytime was not enough. There were I think eight velcroed openings above but I'm too short to reach them. I think my 6'8" husband's almost too short: you have to lean over the curve of the thing and the velcro was so strong that the one time we tried, the handle you pull on for it tore off. To be fair, it was a few years old then. The problem was that water condensed on the inside of it enough to soak towels as I wiped it down every day, and the tree took a hit in that humidity. And yet you had to water it in winter because rain didn't make it in. The door tore and the company replaced the whole thing but then the pandemic hit; the whole reason for buying it was so I could go off and visit my small grandkids, but since we weren't going anywhere we took it down and I went back to my old method of multiple layers of frost covers on cold nights. So those were the drawbacks of that greenhouse--and yet. It made it so we could travel and not worry about losing fruit or the tree itself to the cold while we were gone. It's across the yard from the house, so, no radiant heat to help out there, and incandescent Christmas lights help a lot but you have to hold that heat in. The tree gradually recovered. We still have the unopened replacement greenhouse at the ready.

Keep a vacuum handy when you open the bin and sweep them up as they fly out. Just crack the bin enough to make them come through where it will be easy to catch them without chasing them. Chasing them in the air will just tick you off more. You definitely don't want to put the vacuum too close to the bedding! Do this in addition to what Andrew mentioned or use cardboard. If I get flies (nearly always seem to come in on bananas), I use cereal box cardboard to cover the bedding. If the flies come out, they will come out around the edges where it is easy to catch them with vacuum hose. Tapping the cardboard will make several come out at once.