Wat? If you are on the Segwit chain you should have NET be "bitcoin-segwit", and if on the Bitcoin Cash chain continue to use "mainnet".
Source: https://github.com/kyuupichan/electrumx/issues/228
Reddit: https://redd.it/6v9dvk
ONYL USE OFFICIAL RELEASES
- Latest release: Electrum-2.9.3
Official Electrum: https://github.com/spesmilo/electrum/releases
Official Web: https://electrum.org/#download