Jira REST API v3 with OAuth 2.0 (3LO) via Google Chrome browser returns empty list []

[Hiroshi Nishio]

Summary

Calling Jira REST API v3 (OAuth 2.0 (3LO)) from Google Chrome returns only an empty list. When I try the same API on Postman, it returns a list with proper contents.

Wanna know why and how to fix it.

Response via Chrome (Fail)

issues: []
maxResults: 1
startAt: 0
total: 0

Response via Postman (Success)

{

    "expand": "names,schema",

    "startAt": 0,

    "maxResults": 1,

    "total": 18,

    "issues": [

        {

            "id": "10....20",

            "self": "https://api.atlassian.com/ex/jira/0a94f....ff1ee2/rest/api/3/issue/10020",

            "key": "M...R-20",

            "fields": {

                "summary": ".....",

                "created": "2022-09-05T05:35:47.403+0000",

                "assignee": {

                    "accountId": "62bb.....a1ff",

                    "displayName": "Hiroshi Nishio",

                },

                "updated": "2022-09-05T05:35:49.228+0000",

                "status": {

                    "name": "To Do",

                    "id": "10005",

                }

            }

        }

    ]

}

Source

```javascript

// Search issues in Jira with JQL

interface ParamsTypes extends Record<string, string | number | boolean> {

  startAt: number; // Default is 0

  maxResults: number; // Default is 50

  validateQuery: 'strict' | 'warn' | 'none' | 'true' | 'false'; // Default is strict

  fields: string; // Default is all fields

}

interface SearchIssuesProps {

  atlassianAccessToken: string;

  atlassianRefreshToken: string;

  atlassianCloudId: string;

  startAt: number;

  maxResults: number;

  uid: string;

}

const searchIssues = async ({

  atlassianAccessToken,

  atlassianRefreshToken,

  atlassianCloudId,

  startAt,

  maxResults,

  uid

}: SearchIssuesProps) => {

  const headers = new Headers();

  headers.append('Accept', 'application/json');

  headers.append('Authorization', 'Bearer' + atlassianAccessToken);

  const params: ParamsTypes = {

    startAt, // Default is 0

    maxResults, // Default is 50

    validateQuery: 'strict', // Default is strict

    fields: 'summary,status,assignee,creator,reporter,created,updated'

  };

  const queryString = Object.keys(params)

    .map((key) => `${key}=${encodeURIComponent(params[key])}`)

    .join('&');

  const url = `https://api.atlassian.com/ex/jira/${atlassianCloudId}/rest/api/3/search?${queryString}`;

  // Get tasks completed

  const response = await fetch(url, {

    method: 'GET',

    headers: headers

  })

    .then((res) => res.json())

  return response;

};

```

[Hiroshi Nishio · Accepted solution]

Sorry for the fuss, there was no space after Bearer, so it was not authenticated. It was a completely ordinary mistake. But it would be nice if the error would tell us these things too.