Please see the STR in https://bugzilla.mozilla.org/show_bug.cgi?id=1777931#c19. The STR for this bug are pretty much the same. Maybe switch to the debugger tab of teh dev toolbar before going to the URL. Sometimes you get this crash, sometimes you will get teh crash from bug 1777931.
Bug 1917312 Comment 3 Edit History
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Please see the STR in https://bugzilla.mozilla.org/show_bug.cgi?id=1777931#c19. The STR for this bug are pretty much the same, except maybe switch to the "console" or "debugger" tab of teh dev toolbar before going to the URL. Sometimes you get this crash, sometimes you will get teh crash from bug 1777931.