X_QUERY_DEPRECATION_INVALID
Means
a query declares a deprecation whose dates cannot be rendered
Typical cause
a deprecated: { since, sunset } value that is not a date — the mirror of X_ACTION_DEPRECATION_INVALID, refused where the declaration is converted so every projection that reads it refuses the same value
Fix
edit deprecated: { <field>: … } on the query to an ISO-8601 instant — e.g. '2026-12-31T23:59:59Z'