Description of problem:

If wrong odata URL is provided, an internal error is displayed:
URL: http://localhost:8080/odata/
Exception: org.teiid.core.TeiidRuntimeException: TEIID16008 VDB name not defined on the URL. The url format is http://{host}:{port}/odata/{vdb-name}[.{vdb-version}]/...
org.teiid.odata.TeiidProducerProvider.getContext(TeiidProducerProvider.java:88)
org.teiid.odata.TeiidProducerProvider.getContext(TeiidProducerProvider.java:47)
....
This behavior is quite expected.

URL: http://localhost:8080/odata
Exception: java.lang.NullPointerException
org.teiid.odata.TeiidProducerProvider.getContext(TeiidProducerProvider.java:80)
org.teiid.odata.TeiidProducerProvider.getContext(TeiidProducerProvider.java:47)
...
I expect that teiid should return similar exception


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