Access blocked: This app’s request is invalid

[agh620]

I use free google cloud console account and enabled youtube api v3 for my project in console. 

Now i want to get refresh token from https://developers.google.com/oauthplayground/ using client id and client secret but every time i get following error!  

 

note that I set https://developers.google.com/oauthplayground/ as redirect uris in google console but I still get this error after few hours! 

I get refresh token using this way about 2 or 3 months ago but recently I encounter this error. 

where is my problem? how to fix this?

[agh620 · Accepted solution]

I found problem by own 
I set  
https://developers.google.com/oauthplayground/
as redirect uris in google console and latest slash make error! 
I must use following as redirect uris in google console : 
https://developers.google.com/oauthplayground

[CaptWho]

Is it possible that you be a little more specific in this. I'm not a developer.

[rafaelsoares12]

Hey! How are you? Here is the solution described in the author's post:
https://stackoverflow.com/questions/16693653/how-to-add-or-change-return-uri-in-google-console-for-o...