Error: Other element would receive the click

Hi,
In my first page, I have two buttons “Add”.
When I click on the first, a small form appears. I set texts, then I click on Validate Button.
Then, I click on the second button, but I receive this error:

" error: Element is not clickable at point (1283, 392). Other element would receive the click:

"

My piece of code:
//Validate Form (first button)

WebUI.click(findTestObject(‘Object Repository/eTest1/ValiderAdressObject’))

//Second Button Add

WebUI.waitForPageLoad(10)

WebUI.scrollToPosition(200, 200)

//CustomKeywords.‘com.packageClickJs.keywordClickUsingJS.clickUsingJS’(findTestObject(‘Object Repository/eTest1/AjoutInterlocObject’), 10)

WebUI.click(findTestObject(‘Object Repository/eTest1/AjoutInterlocObject’))
.

Even the CustomKeywords doesn’t work

Thanks.