M Language code to connect Google Analytics api directly to Power BI

This program is written on M# language and it is used for retrieving data from Google Analytics API directly to Power BI                           

Here is the link of Dashboard which I am using -  
https://github.com/maxim-uvarov/PQGoogleAnalytics/files/647569/PQGoogleAnalytics2.02.zip

After that, I am following steps

• Open the settings of Power BI, go to the "Privacy" tab, choose the setting "Always ignore the Privacy Level settings".
• Open the link below in your browser, hit the "Allow" button and copy the given token (I changed client code to my GA account client code) 

https://accounts.google.com/o/oauth2/auth?scope=https://www.googleapis.com/auth/analytics.readonly&response_type=code&access_type=offline&redirect_uri=urn:ietf:wg:oauth:2.0:oob&approval_prompt=force&client_id=155297956885-088obc06926s8kolll6kdqkd9u842n56

• Open Power Query by hitting "Edit Queries" button on the "Home" tab on the ribbon of Power BI.
• Paste the token from the step 1 into "authToken" parameter.
• Go to "getRefreshToken" query and Copy the token from your preview window.
• Paste the token from the step 5 into "refreshToken" parameter.

After pasting the “refreshToken” I clicked “close and apply” button in the power BI, I am getting following error

I tried other options(Windows,A PI, Basic etc.) for authentication but not able to connect.