Page break doesn't work correctly

I cleared the page break function by displaying an error sign. I applied it now again and captured it.

Using "page Break" function to create page2 and Preview, "Error" sign will appear as below. I do not know where and how to fix it.

Please let me know how to fix them and how to use page break function.

This is an error message. You will see it when the required fields are empty. I inspected your form. Your email field was required.

This was an error above.

You can unrequire this field.

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