Created a test in testcafe, using Javascript in Visual studio code. Not sure why this error appears, as couple of test cases are running fine with same codes

Unhandled promise rejection: ActionStringArgumentError { code: 'E16', isTestCafeError: true, callsite: CallsiteRecord { filename: 'File Location', lineNum: 23, callsiteFrameIdx: 6, stackFrames: [ [Object], [Object], [Object], [Object], [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], CallSite {}, [Object], [Object], [Object], [Object], [Object], [Object] ], isV8Frames: true }, argumentName: 'text', actualValue: 'undefined' } Browser: Chrome 96.0.4664.45 / Windows 10

Thanks