I have seen this title before, but somehow recently I am having more trouble with these errors.
Copied a flow from somewhere > import, it looks like it imported it, but no new tab and no flow, deploy:
Flows stopped due to missing node types.
Checking the - this was a subflow which i could delete.
Configuration nodes, I see that there is a new flow in the list, but that flow does not show up in my tabs and I cannot delete it.
Now I read that the only way to resolve this, is to add the nodes first.
14 Mar 18:02:30 - [info] Waiting for missing types to be registered:
This blocks node-red as a whole, this cannot be the way this works right ? Missing nodes should be ignored with some error.