How to resolve eclair-node-gui-0.3.3-12ac145.jar getting CAPSULE EXCEPTION after java update to version 11.0.9.1?
You're using a very old version of eclair which used Capsule to simplify packaging and deployment. We've moved away from Capsule (which seems to be a dead project) quite some time ago and now package applications as zipped directories which include a bin/ subfolder with launcher scripts for linux/macos/windows. I strongly suggest that you upgrade your node to the latest release of eclair which you'll find there: https://github.com/ACINQ/eclair/releases. I also suggest that you switch from the GUI (we don't package it anymore but it's very easy to build yourself) to the server version and use it through it's JSON API.
You can get technical support for eclair at https://gitter.im/ACINQ/eclair if needed. Thanks!