Step 1: Create new client

Step 2: Configure client
After creating client, click manage to go to management screen.
On management screen, go to security tab and uncheck Disable implicit OAuth, then Save

Step 3: Get access token
Open any text editor and paste the following URL into it

Then replace CLIENT_ID with the client id which we created in the first step.
Copy the new URL and paste into any browser, the authorize screen will appear.

Clicking Authorize, it will take us to our website with the access token on the URL, something like
This is the access token that we need.

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