API request failed when trying to get current project because: Internal server error: - status 500

Summary

I am not able to configure GitLab Workflow extension because after configuring token and instanceUrl getting error.

{
  "message": "API request failed when trying to get current project because: Internal server error: {\"response\":{\"errors\":[{\"message\":\"Internal server error\"}],\"status\":500},\"request\":{\"query\":\"\\n  \\n  fragment projectDetails on Project {\\n    id\\n    name\\n    description\\n    httpUrlToRepo\\n    sshUrlToRepo\\n    fullPath\\n    webUrl\\n    group {\\n      id\\n    }\\n  }\\n\\n  query GetProject($projectPath: ID!) {\\n    project(fullPath: $projectPath) {\\n      ...projectDetails\\n    }\\n  }\\n\",\"variables\":{\"projectPath\":\"services/storage\"}}}",
  "stack": [
    "Error: API request failed when trying to get current project because: Internal server error: {\"response\":{\"errors\":[{\"message\":\"Internal server error\"}],\"status\":500},\"request\":{\"query\":\"\\n  \\n  fragment projectDetails on Project {\\n    id\\n    name\\n    description\\n    httpUrlToRepo\\n    sshUrlToRepo\\n    fullPath\\n    webUrl\\n    group {\\n      id\\n    }\\n  }\\n\\n  query GetProject($projectPath: ID!) {\\n    project(fullPath: $projectPath) {\\n      ...projectDetails\\n    }\\n  }\\n\",\"variables\":{\"projectPath\":\"services/storage\"}}}",
    "\tat /Users/hitesh/.vscode/extensions/gitlab.gitlab-workflow-3.15.1/out/src/gitlab_service.js:98:19",
    "\tat Generator.throw (<anonymous>)",
    "\tat rejected (/Users/hitesh/.vscode/extensions/gitlab.gitlab-workflow-3.15.1/out/src/gitlab_service.js:6:65)",
    "\tat processTicksAndRejections (internal/process/task_queues.js:97:5)"
  ]
}

Steps to reproduce

1. Install GitLab Workflow extension
2. Add "gitlab.instanceUrl": "https://subdomain.domain.com" in the settings.json
3. Select GitLab: Set Personal Access Token from the command palette
4. Provide the same value from step 2. as the Url to GitLab instance
5. Paste the PAT created from GitLab UI.
6. Click on the GitLab Workflow extension from the extensions panel.

What is the current bug behavior?

Throw error in the Output section.

{
  "message": "API request failed when trying to get current project because: Internal server error: {\"response\":{\"errors\":[{\"message\":\"Internal server error\"}],\"status\":500},\"request\":{\"query\":\"\\n  \\n  fragment projectDetails on Project {\\n    id\\n    name\\n    description\\n    httpUrlToRepo\\n    sshUrlToRepo\\n    fullPath\\n    webUrl\\n    group {\\n      id\\n    }\\n  }\\n\\n  query GetProject($projectPath: ID!) {\\n    project(fullPath: $projectPath) {\\n      ...projectDetails\\n    }\\n  }\\n\",\"variables\":{\"projectPath\":\"services/storage\"}}}",
  "stack": [
    "Error: API request failed when trying to get current project because: Internal server error: {\"response\":{\"errors\":[{\"message\":\"Internal server error\"}],\"status\":500},\"request\":{\"query\":\"\\n  \\n  fragment projectDetails on Project {\\n    id\\n    name\\n    description\\n    httpUrlToRepo\\n    sshUrlToRepo\\n    fullPath\\n    webUrl\\n    group {\\n      id\\n    }\\n  }\\n\\n  query GetProject($projectPath: ID!) {\\n    project(fullPath: $projectPath) {\\n      ...projectDetails\\n    }\\n  }\\n\",\"variables\":{\"projectPath\":\"services/storage\"}}}",
    "\tat /Users/hitesh/.vscode/extensions/gitlab.gitlab-workflow-3.15.1/out/src/gitlab_service.js:98:19",
    "\tat Generator.throw (<anonymous>)",
    "\tat rejected (/Users/hitesh/.vscode/extensions/gitlab.gitlab-workflow-3.15.1/out/src/gitlab_service.js:6:65)",
    "\tat processTicksAndRejections (internal/process/task_queues.js:97:5)"
  ]
}

What is the expected correct behavior?

It should accept the token and show relevant information in ISSUES AND MERGE REQUESTS & FOR CURRENT BRANCH sections.

Relevant logs and/or screenshots

Possible fixes