Name field can return False, which is not compatible with a replace. We therefore fallback on a void string, as already done in various other report names. Related to Task-2868153 (Mail: Allow multi-reports mail templates) closes odoo/odoo#105042 X-original-commit: 1e223619e466792c9b073b302ebc9d68cabb9aac Related: odoo/enterprise#33652 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>