How did my goldfish flower come to be like this[what]? Is it caused by the recent continuous high temperatures? This pot of goldfish flowers has been placed on the balcony. In spring, the goldfish flowers are lush and blooming

How did my goldfish flower come to be like this[what]? Is it caused by the recent continuous high temperatures?

This pot of goldfish flowers has been placed on the balcony. In spring, the goldfish flowers are lush and full of yellow flowers like goldfish, which are worthy of the name and come to life! I also took photos showing off to my colleagues (Photos 1 and 2).

But just a few days ago, I suddenly noticed that the leaves at the top of the branches of the goldfish flower were black (Picture 3), and the situation was not good! My first reaction was that the temperature on the balcony was too high, so I immediately moved it to the house and cut off the obviously dirty one.

In these few days, as long as I touch it, the leaves are still falling straight down, and some branches have become the commander of the light rod, so it hurts me to see it!