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Why did my CloudWatch canary fail with the error "Node is either not visible or not an HTMLElement"?
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I created an Amazon CloudWatch canary in the GUI Workflow Builder. However, my canary failed and I received a "Node is either not visible or not an HTMLElement" error.
Resolution
When you create a CloudWatch canary, you might receive a Node is either not visible or not an HTMLElement error for the following reasons:
You used a script that references a non-existent element that's a wrong selector.
You used a script that references an invisible element that's a correct selector but with an invisible element. Note: If you use a global selector as a class element in your script, then the selector uses the first element in the resulting array by default. If the first element has a display:none CSS value, then the element is invisible.