A non-numeric value encountered

I'm getting exception "A non-numeric value encountered" on the link where I've code something like

$data = $d->events()->where('event_type', 'something')->count();

I had this thing working OK with PHP 7.0 but upgrading to PHP 7.1 I started getting this exception

I've now Laravel - 5.4.15

Level 122

remove the count() and dd the result. An invalid number used to be cast to zero now throws a warning.

Level 1

Tried that, but didn't work

Level 122

Well its not supposed to work. It is supposed to tell you what you are getting back from the database.

From that you can decide if it is countable.

If for instance, you get back null then it cannot be counted.

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