Error when trying to upgrade from EspoCRM-upgrade-8.4.2-to-9.0.8

[jpajmo]

Hi,

Im getting this error when trying to upgrade my EspoCRM instance:

Error 500
Class "Symfony\Component\Mailer\Transport\AbstractTr ansp ort" not found

I get the same error from either CLI upgrade or UI upgrade

Can someone guide me on this

Thanks!

JP

[victor]

A similar topic has already been discussed, maybe it will be useful for you: https://forum.espocrm.com/forum/inst...o-9#post119566