The message filter in the WebContent process on macOS needs to allow the endpoint mach_exception_raise.
<rdar://problem/71522043>
Created attachment 414453 [details] Patch
Comment on attachment 414453 [details] Patch Reviewed and will test patch manually
Created attachment 414454 [details] Patch
Comment on attachment 414454 [details] Patch r=me
(In reply to Geoffrey Garen from comment #5) > Comment on attachment 414454 [details] > Patch > > r=me Thanks for reviewing!
Committed r269966: <https://trac.webkit.org/changeset/269966> All reviewed patches have been landed. Closing bug and clearing flags on attachment 414454 [details].