Inbox: Syntax error [$]

[abureaux]

I am seeing this error when refreshing the Inbox for a survey:

The query was previously working, and isn't exactly complicated:

Nothing has changed in the survey recently. Any ideas?

[abureaux · Accepted solution]

My mistake apparently! I went back and double-checked, and I swapped a couple fields around (somehow). The issue was that, technically, the field it was searching didn't exist.