Sketch Toolbox crashing
***Summary:*** Everytime I open Sketch Toolbox, it crashed in 1-3 seconds.

***Steps to Reproduce:*** Open Sketch Toolbox.

***Expected Results*** To actually stay open.

***Actual Results:*** Crashes in 1-3 seconds.

***Notes:*** Crash Log: https://cl.ly/1I0e2q2L3U3l