unknown filter operator "{op}"; the conditio...

Warnings reference › op:*

Identifier

op:*

Raised by

The grid (core)

Since

1.0.1

What happened

The filter kernel was given an operator it does not implement. The condition is compiled to a predicate that matches nothing, not one that admits every row - a bad operator can only narrow a result, never widen it. filters.set and state.apply already drop a condition whose operator is outside the closed §9.3 enum before it reaches this point (see filter:op:*:*); this is the kernel's own fail-closed default for a direct or headless call.

The fix

Use one of the documented operators. A condition built by hand, or restored from an older saved view, is the usual source.

Reference

Covered in full at the API reference.