ElectrumX v1.8.8 Released by Upstream, Includes Name Script Support
https://www.namecoin.org/2018/12/07/electrumx-v1.8.8-released.html

Upstream ElectrumX has released v1.8.8, which includes name script support. (ElectrumX then subsequently released some other minor revisions, which seem to mostly be bug fixes; the latest release is currently v1.8.12.) If you run a Namecoin ElectrumX server, please consider upgrading to the latest ElectrumX release