Error, Send Mail from project

Using my Dolibarr Other native modules
1

DOLIBARR ENVIRONMENT

  • Version: [11.03]
  • Operating System: [Linux]
  • Web Server: [Apache]
  • PHP: [7.3.17]
  • Database: [mysql 5.5.62]

Send Mail from Project Card failed. The red message ErrorFailedToReadObject is displayed

Send Mail from e.g. Partners, Invoices, Users is working fine.
Thank you for help.

Uli

2

Solution of the problem:
A business partner must be specified for the project.
My personal opinion is, that “Send Mail” should work even without the specification of a business partner.