bitbucket api /diff endpoint responding with empty string

Hello,

So I am using bitbucket api to get the diff of files in a PR. Somehow, its responding an empty string even though the PR has file changes. The issue seems to be reproducible, tried it in multiple repos from multiple accounts.

This is the command I am using to access this.

curl --user USERNAME:PASSWORD -s -XGET "https://api.bitbucket.org/2.0/repositories/

{OWNER}/{REPO_SLUG}/pullrequests/{PR_ID}/diff"

When I try this command, it works.

curl --user USERNAME:PASSWORD -s -XGET "https://api.bitbucket.org/2.0/repositories/{OWNER}

/

{REPO_SLUG}

/pullrequests/

{PR_ID}

/comments"

Can someone please help me here.?