Opencypher not working from local notebook

Question

I can successfully connect to Neptune from my local JupyterLab notebook:
```
%%graph_notebook_config
{
  "host": "xxx-yyy.us-east-1.neptune.amazonaws.com",
  "port": 8182,
  "auth_mode": "IAM",
  "load_from_s3_arn": "",
  "ssl": true,
  "ssl_verify": true,
  "aws_region": "us-east-1"
}
```
I am able to run Gremlin queries that return results:
```
%%gremlin
g.V().limit(5)
```
However, if I run an OpenCypher query:
```
%%oc
match (n) return n limit 5
```
I get error:
```
{'error': ProxyError(MaxRetryError("HTTPSConnectionPool(host='xxx-yyy.us-east-1.neptune.amazonaws.com', port=8182): Max retries exceeded with url: /openCypher (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 503 Service Unavailable')))"))}
```

Any idea why Gremlin works but OpenCypher does not? Neptune versions is 1.1.1.0

Answer

Hello,

Can you confirm if the same error is received when using the below:

%%opencypher
match (n) return n limit 5

Also, does the error you receive happen intermittently or whenever you try to run it?

Answer

Talked to internal network team. Solution was to disable all proxies. Added below to notebook.
```
%env HTTP_PROXY=
%env HTTPS_PROXY=
%env NO_PROXY=
%env ALL_PROXY=
%env http_proxy=
%env https_proxy=
%env no_proxy=
%env all_proxy=
```

Opencypher not working from local notebook

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