clickSelector not working with chrome engine

We have scenario to capture screenshot after a button click and we are using clickSelector , But screenshot is not capturing. we are using chrome engine .
Can anybody help to resolve this

{
"label": "Test page",
"url": "http://google/test/test.html",
"readySelector": "html.fw-components-loaded.components-loaded",
"clickSelector":".a-button.a-button--full-width.test-aa__info-confirmation",
"delay": 10000,
"selectors": "div.form",
"selectorExpansion": true,
"misMatchThreshold": 1,
"requireSameDimensions": true
}