Github user doanduyhai commented on the issue:
https://github.com/apache/zeppelin/pull/1369
OKKKK I've found the issue, it's tricky.
I have added a non-existing dependency to the angular interpreter and I can
also see a spinning circle forever. With Web Dev Console, I can see the return
JSON result to the call GET /interpreter on the REST API. Below is the JSON
result for Angular:
```json
...
"status":"DOWNLOADING_DEPENDENCIES",
"errorReason":"Could not find artifact one:two:jar:1.1.1 in central
(http://repo1.maven.org/maven2/)",
...
```
So the status is wrong, it should be "ERROR" instead of
"DOWNLOADING_DEPENDENCIES". Let me debug the server code
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