Fix: Do not send empty strings in ccEmails to OC (!434) · Merge requests · Coopdevs / Som Connexió / Odoo / Odoo SomConnexió

CHANGELOG:

### Fixed
- [#431](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/432) Avoid sending empty strings in ccEmails to OpenCell

Send None instead of an empty strings to OC ccedEmails, because this caused an illegal address error when sending invoices by mail.

Edited Mar 25, 2021 by Pelayo García

Fix: Do not send empty strings in ccEmails to OC