Teams Personal App Development

ChetanSharma-msft hi Chetan Sharma, Thanks for the reply. I am referred the below link for graph call
https://docs.microsoft.com/en-us/sharepoint/dev/spfx/use-msgraph

In the web version, there is no issue , data loaded correctly. But In the desktop version issue arose.
I am using the alert popup to lock the error message. But that message is shown as undefined. In the log not showing enough details to trace the issue.

I am using the below code in my ts file

      this.context.msGraphClientFactory
        .getClient()
        .then((client: MSGraphClient): void => {
          alert(client)
          this.graphClient = client;
          resolve();
        }, err => reject(err));

I am using the below code in my TSX file

      const currentUser = await this.props.graphClient.me().then(async (user,error) => {
        if(error) {
          alert(JSON.stringify(error));
        }
        alert(user.mail)
      });

Thanks, Chetan Sharma