SPARQL query request incorrectly adds trailing slash to endpoint URL

[avillar]

The url="" line in methods.py is adding a trailing slash to the endpoint URL, resulting in a 404 error for some queries (e.g., for a Fuseki server, http://localhost:3030/ogc-hosted/update works, but http://localhost:3030/ogc-hosted/update/ does not).

url=be_endpoint can be set as a workaround (although it seems a little redundant).

[avillar]

This also results in 500 errors when running CONSTRUCT. Can confirm that the workaround does indeed work.

[edmondchuc]

Closed in #127.