How can I fix browser crashing issues after macOS update?

Try this:

Go to Finder > Go > Go to Folder, and paste this location in there and delete the "com.apple.SpeakSelection.plist" file (don't forget the "~" character in the front):

~/Library/Preferences/com.apple.SpeakSelection.plist

The problem may be with the com.apple.SpeakSelection.plist and once you delete it the issue may go away.

If that does not solve the problem, it would be helpful to post the EtreCheck report using the Additional Text option when posting. As you know, the report contains no personal information.

Have you deleted the com.apple.SpeakSelection.plist file as previously suggested. The Crash Logs in the EtreCheck report are the same ones that are seen when that file needs deleting.

"All browsers crashing after update.: I'm using a macbook pro 2019. I just updated my computer. All browsers keep crashing. I keep getting this message Namespace SIGNAL, Code 4 I just performed an ETRECHECK report and they found no majors issues just all the crashing. Can anyone help?"

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Report this as a Bug to Apple:

Do your Part: Inform Apple of your feedback of this issue. Include how you’ve troubleshot this, and your results. Apple wont get back to you directly, but the more feedback they receive from its users, the more likely they will know what needs to be fixed, and what their customers prefer in updates, and future macOS versions to come. Apple with know nothing of this occurrence, if you don't report it to them.

1. Go Here: Feedback - macOS - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Select: "Software/Firmware Update" for the "Feedback Area"
4. Comment: That is began after installing an update. Include the URL of this thread.
5. Proceed from there as necessary