The Electron stores it's cache in these folders:
Windows:
C:Users<user>AppDataRoaming<yourAppName>Cache
Linux:
/home/<user>/.config/<yourAppName>/Cache
OS X:
/Users/<user>/Library/Application Support/<yourAppName>/Cache
So deleting these folders can also help you.
Of course this is one time solution ;-)
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…