No connection could be made because the target machine actively refused it

Hi all, 

I am trying to execute the scripts developed using Robot Framework on Bit Bar cloud. For that I have provided the required capabilities. 

But observing this issue/error message "MaxRetryError: HTTPSConnectionPool(host='appium.bitbar.com', port=10090): Max retries exceeded with url: /wd/hub/session (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000022522B89360>: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))" while executing the test. 

And I took reference from the samples provided in the github here is the link : https://github.com/bitbar/test-samples/tree/master/samples/testing-frameworks/robot-framework 

Could someone help me in resolving this. 

Here is the capabilities I have provided. 

bitbar_username 

bitbar_password     

bitbar_apiKey 

bitbar_target=Android 

bitbar_device=Google Pixel 3a Android 12 

bitbar_app 

deviceName=Android Phone 

automationName=Appium 

Here are the capabilities provided in the Open Application Robot Framework Appium Library keyword but observing the same issue

Open Application    https://appium.bitbar.com:4723/wd/hub    alias=testapp   bitbar_username=xxx     bitbar_password=xxx    bitbar_apiKey=xxx    bitbar_project=Appium Android Project     bitbar_testrun=Test run 1     bitbar_target=Android    bitbar_device=Google Pixel 3a Android 12     bitbar_app=${APP_ANDROID}      deviceName=Android Phone     automationName=Appium

Please refer he attached screenshots of the test log and code