We have started using DM classic scene7 with AEM 6.4.1 and Preview and Publish URLs wereworking fine.
Recently, We started seeing "invalid lock" for the publish URLs though images are getting displayed properly with the preview URLs.
Any reason why we are getting invalid lock on the browser console instead of displaying images with the publish URLs.
I faced similar issue when adding IP addresses. Got invalid local error when below setting is enabled in scene7 server
Setup --> Application Setup --> Publish Setup --> Image Server
Thank you, that worked. We are not sure why it was disabled automatically but i will raise an adobe ticket for this issue.