Streamelements plugin is causing the crash. This is a known behaviour caused by this plugin but people keeps installing it.
If you want to use the plugin you need to contact their support and see if they can fix it.
Alternatively, completely remove it. Use the uninstaller they provide, then manually remove the leftover files in %appdata%\obs-studio\ they keep here for no real reason because this files keeps interacting with OBS causing issues. Now uninstall and reinstall OBS in order to fix any other changes this plugin may have perform.