in step:
Press CTRL-F on the keyboard, and search for this hash in the file. It should appear 4 times, in different places, you need to delete them, but carefully to keep the JSON syntax intact, so I have highlighted what you need to delete, it should be different for you, but you will get the idea, it should be everything that is highlighted:
http://savephoto.ru/f/8rd13dzi1gnu19

does not find the cache for some reason, see photo
http://savephoto.ru/f/8yyys3tlxncj19

Electrum 4.0.2 for Windows