Crashing frequently

What is your operating system? Mojave

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit? 20.7.11

Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
Whilst starting basic editing in the timeline with adjusting lengths etc on my first project for about 2 hours it crashed around 5 or so times when just doing something as simple as changing the length of a clip. Any ideas good folks? Thanks ;o}