# QueryConstructionError.invalidOperation(_:)

- **Module:** QueryConstructionError
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-swift/blob/254f8b2be7eb60cacc3ffcb3ea8e456784f582df/Sources/LibTmux/FilterExpr.swift#L46
- **Page:** https://libtmux.org/en/swift/latest/reference/queryconstructionerror-invalidoperation(_-)/

The field and operator could not form a safe expression.