A custom dock or browser source is causing the crash. Simple remove it.
There's many similar posts in this forum with the same issue and solved the same way. Most times this is caused by plugins like streamelements plugin, but may be others.
Unfortently im tried to reinstall OBS and looks like logs and crash reportes deleted. Now waiting if it will happend again and will send.Please attach a log file from the moment it crashed, and the corresponding crash report.