Because of this issue: https://github.com/lightningnetwork/lnd/issues/2096 older versions of LND are missing sign message and verify message REST endpoints. The current behavior just shows a quick error that says "Not found". It would be much better if we informed the user that their version doesn't support it in Joule, and CLI instructions on how to perform the signature / verification.
Description of the Issue
Because of this issue: https://github.com/lightningnetwork/lnd/issues/2096 older versions of LND are missing sign message and verify message REST endpoints. The current behavior just shows a quick error that says "Not found". It would be much better if we informed the user that their version doesn't support it in Joule, and CLI instructions on how to perform the signature / verification.
Steps to Reproduce