Unable to empty the trash folder

My trash folder shows 15 emails all the time. If I delete some emails from the inbox then they get added to the trash folder making the count more than 15. When I try to now empty the trash folder it deletes all the newly deleted email but then gets stuck at 15 emails still to be deleted. How can I fully empty the trash folder?

Please close eM Client and open a Windows Command Prompt. Not a powershell, but a command prompt.

Paste in this command:
“C:\Program Files (x86)\eM Client\MailClient.exe” /dbrepair

When that is done restart eM Client.

Are the 15 messages still in the Trash?

Thank you Gary, your advice worked perfectly and the trash folder can be emptied now.
Great !!