Error Message NullReferenceException Appears When Running mail.sender Or mail.from Against IBM Notes Emails In Studio

Error message NullReferenceException appears when running mail.sender or mail.from against IBM Notes emails in Studio.

Issue Description: When IBM Notes email body contains HTML code, running any activities that include mail.sender or mail.from, error message NullReferenceException appears. This issue is observed in IBM Notes 9.0.1 + package UiPath.Mail.Activities 1.7.2 + Studio 2019.10.4.

Resolution: Update package UiPath.Mail.Activities to 1.9.3 resolves the issue.