I am getting error on saving the test case like 'Attempted to beginRule:P/C%%Users ...' any help?

Why I am getting this error on saving test cases?
Once the pop up closed next time won’t come this error
Piece of code is below

ExcelData data = findTestData(‘TestData_Gmail’)

WebUI.openBrowser(’’)

WebUI.navigateToUrl(‘www.gmail.com’)

WebUI.maximizeWindow()

WebUI.waitForElementClickable(findTestObject(‘Page_Gmail Login/Page_Gmail/input_Continue to Gmail_identi’), 5)

WebUI.setText(findTestObject(‘Page_Gmail Login/Page_Gmail/input_Continue to Gmail_identi’), data.getValue(‘Username’))

WebUI.click(findTestObject(‘Page_Gmail Login/Page_Gmail/content_Next’), FailureHandling.STOP_ON_FAILURE)

WebUI.waitForElementClickable(findTestObject(‘Page_Gmail Login/Page_Gmail/input_Too many failed attempts’), 5)

WebUI.setText(findTestObject(‘Page_Gmail Login/Page_Gmail/input_Too many failed attempts’), data.getValue(‘Password’))

WebUI.click(findTestObject(‘Page_Gmail Login/Page_Gmail/span_Next’))