Premiere Pro Beta Video Playback Problems

Hello Community!

Since yesterday I have been having problems playing videos on Premiere Pro Version 25.2.0 Beta.

Pressing the space bar or the play button does not play anything, it remains stuck.

Without having done anything in particular, it suddenly stopped playing both in the timeline and in the source. I don't understand what to do. It continues to open and close but the problem persists.

I am working on an iMac 2021 Apple M1 with Sonoma 14.6.1 Ram 16GB operating system

The video files I am working with are in .mp4 but the problem also exists on other files even if I open new projects.

I tried to open Premiere Pro version 25.1.0 (no Beta) and everything works.

I hope you can help me, thanks.

Nicola