Newsletter (module)

Hello out there. I just updated cantao to latest version 2.11
since then sending NEWSLETTERS seems not possible.

I changed in my templates the mail_default to .xhtml

since I'm not sure if Cantao now takes the templates out of system/modules/newsletter/templates
changed there the templates mail_default also to .xhtml

all I get when trying to send a test mail is:
Could not load class Email in /home/.sites/340/site822/web/system/functions.php on line 104

I have absolutely no idea … anyone. thanks

If you change template names (or file extensions) you probably have to rebuild the file cache "system/tmp" in the back end module "Maintenance". Further, it is always a good idea to run the Contao check after a system update.