I tried to create a Filter extensions view on Opportunities without next activity planned or next activity is less than a month from now.

But I get zero results. If I filter only on one of the two criteria, it works, but the combination doesnt.

What am I doing wrong?

(I'm using Odoo Online v13)

<filter string="No activities within coming month" name="no_activities_within_coming_month" domain="[('type','=','opportunity'),'|',('activity_ids.date_deadline', '&lt;', (context_today() + relativedelta(months=1, weekday=0)).strftime('%Y-%m-%d')),('activity_date_deadline', '=', False)]" help="Show only opportunities for which the next action date is not within the next month"/>