Apigee adding a backslash at the last of URL

[#1]

I'm accessing below apigee configured URL

https://xyzabc.com:9111/oauth2?client_id=zrgst&scope=xyz

when I'm tracing this url at Apigee i'm getting following URL

https://xyzabc.com:9111/oauth2?client_id=zrgst&scope=xyz/

I'm facing this issue of adding a backslash while I'm accessing URL from iOS phone and my desktop chrome browser.

Due to this extra slash I'm facing a lots of issues, It will be great help if someone can provide solution.