Denoiser not working

[TeoRossi93]

Hey guys,

this morning I was working on some studio shots and I was testing both the standard denoiser and the "intel cpu ai".
I switched to the intel one and then went back to the standard but now it's not working anymore. The denoise calculation happens but nothing change if I put 0 or 1 value...
What could be the issue?

[TeoRossi93]

- UPDATE -

I solved this creating a new project and importing all the stuff from the old one, now it works properly.
Can't understand the issue anyway :(