HTTPSConnectionPool with extra / - robotframework

Question

The code I use in Eclipse , file.robot is
${resp}= Get Request localhost http://localhost:8080/UI/core/other/htmlreport/ params=apikey=${API_KEY}
at that point there is no extra / character
but the response is with an extra /
ConnectionError: HTTPSConnectionPool(host='localhost', port=443): Max retries exceeded with url: /http://localhost:8080/UI/core/other/htmlreport/?apikey=d9i7qom4p7m12rd2eqf2612s95 (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000021C6BD54D90>: Failed to establish a new connection: [WinError 10061] Kan geen verbinding maken omdat de doelcomputer de verbinding actief heeft geweigerd'))
zoom in:
/http://
Where does that extra character / come from?
it is something with the session,
but this causes an error in the next step as well:
KEYWORD RequestsLibrary . Create Session localhost, http://localhost:8080/UI/core/other/htmlreport/, params=apikey=${API_KEY}
Documentation:
Create Session: create a HTTP session to a server
Start / End / Elapsed:
20201104 14:55:45.917 / 20201104 14:55:45.930 / 00:00:00.013
14:55:45.918 INFO Creating Session using : alias=localhost, url=http://localhost:8080/UI/core/other/htmlreport/, headers=params=apikey=d9i7qom4p7m12rd2eqf2612s95, cookies={}, auth=None, timeout=None, proxies=None, verify=False, debug=0
14:55:45.929 FAIL ValueError: not enough values to unpack (expected 2, got 1)

Answer 1

The docs aren't completely clear, but it's exepected that your create a session first and then use that session to call Get Request
Create Session localhost http://localhost:8080
${resp}= Get request localhost /UI/core/other/htmlreport/
You can see in the code that it expects the session to have a schema and host, while the uri parameter is the path - https://github.com/MarketSquare/robotframework-requests/blob/c1e63fdc2738b1f95cbfd9968911261b7c8829ae/src/RequestsLibrary/RequestsKeywords.py#L990