Progress dialog not closing when token request fails #1306
Description
When network bandwidth is limited to 256kbps, token request failures due to network or parsing errors can cause the progress dialog to not close, which can cause the UI to freeze and lead to memory leaks. Additionally, if the token response lacks a valid accessToken and error fields, the dialog will remain open indefinitely, causing the app to freeze; please update the error handling to ensure that the dialog is always closed.