Can't open attachments direct from email

Hi

Stumbled across an issue where if I click on an attachment (doesn't matter 
what type - file or link) in an email, it opens the related program e.g.  
okular and then fails with the message "Invalid URL"

This appears only to happen to emails in google imap in kmail.  Can't find any 
bugs reported in bugs.kde

regards

Ian
--
openSUSE Tumbleweed 20260113
kwin 6.5.4
kmail2 6.6.1 (25.12.1) - akonadiserver 6.6.1 (25.12.1) - Kernel:  6.18.5-1-
default  - kernel-firmware-radeon  20250627