RobotFramework (python 3): AppiumLibrary : Open application > InsecureRequestWarning - python-3.x

Question

I'm trying (successfuly) to connect to a remote server where my device is connected.
But, despite my effort and researchs, I always have InsecureRequestWarning warning showing up...
The code :
*** Settings ***
Library AppiumLibrary
*** Test Cases ***
First run wizard - Connect to Remote
[Setup] Install and open app
[Teardown] Close all applications
Log Hello World WARN
Sleep 10
*** Keywords ***
Install and open app
open application ${Grid} &{MyDevice} &{UserCredential} &{Android_app}
*** Variables ***
${Grid} http://xxx/appium
&{Huawei_P20_Pro} uuid=xxx relaxed-security=True
&{UserCredential} Username=xx ApiKey=xxxx
&{Android_app} appPackage=xxx appActivity=xxx appWaitActivity=xxx
The output :
First run wizard - Connect to Remote
C:\Users\xxx\AppData\Local\Programs\Python37-32\Lib\site-packages\urllib3\connectionpool.py:847: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecureRequestWarning)
[ WARN ] Hello World
C:\Users\xxx\AppData\Local\Programs\Python37-32\Lib\site-packages\urllib3\connectionpool.py:847: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
| PASS |
------------------------------------------------------------------------------
InsecureRequestWarning)
test :: Android template to connect to Remote | PASS |
1 critical test, 1 passed, 0 failed
1 test total, 1 passed, 0 failed
==============================================================================
Output: C:\Projects\RF\test\output.xml
Log: C:\Projects\RF\test\log.html
Report: C:\Projects\RF\test\report.html
Process finished with exit code 0
I've tried to put the capability relaxed-security it didn't work.
I've found some similar case with Create Session Keyword and the parameter verify=True, but it doesn't work on Open Application either.
Currently, I'm about to modify the source code of the urllib3 library to prevent this anoying warning, but this is not a proper solution.
Thus I was wondering if someone could have a clue arround here !
(using http or https makes no difference in the output)
[Partial answere here Suppress InsecureRequestWarning: Unverified HTTPS request is being made in Python2.6 :
It's just a workaround, it shows how to disable the warning, not how to prevent it (== make the things right) such as enable the certificate verification]