LOGIC PRO X: Midi track no sound

Hello all,

I cannot hear anything from my current midi tracks and I can see that there is a signal from the level meters of my virtual synths but no signal on logic pro x's level meters.

When I create new midi tracks, I can hear the sound but there has to be an another way to fix this midi problem. I tried saving my channel strips so that I do not manually adjust everything again, but when I load them I still do not have sound.

I checked if I soloed anything but I have this problem in every project of mine.

I'm using Logic Pro X 10.4.4

Thanks