We run from the UI the command -
| rest /servicesNS/-/<app name>/data/transforms/lookups/.
We get the results but also an error for each indexer saying -
REST Processor: Failed to fetch REST endpoint uri=https://127.0.0.1:8089/servicesNS/-/<app name>/data/transforms/lookups/?count=0
uri=https in the error while the search heads run on http...