Since two-three days i cannot read the messages of 2 imaps accounts. (gmail, free.fr)
I receive the messages, and when i click on them nothing happens and i see the message in the status bar:
"Unable to get item from backend (collection 0): Unable to retreive item from resource: NO PartTypeException: Invalid part type name."

I deleted all resources from akonadi and i deleted the folder ~/.local/share/akonadi
but it did nt help.

I have opened a bug report too https://bugs.kde.org/show_bug.cgi?id=332936

Thanks in advance for your help

With a pop3 account it works
Only the imap accounts have the problem, but unfortunately my main mailbox is an imap ...

ok with akonadi 1.12.1