WLED turns on by itself

Hello, I’m new here.
Maybe you can help me with my problem.
I have Hyperion NG running on a Pi4 and running WLED on a D1 Mini V3 NodeMCU ESP8266EX. Alexa is connected. The cables from D1 to the LED stripe (SK6812) are very short.
So far everything works.
Only WLED always switches on by itself. What could that be about?
I would be very grateful for any help or ideas that would help me.