def display_error():
"""
Displays error message in the document after clearing it
"""
doc.remove_root(doc.roots[0])
div = Div(text="Events Not Available")
div.margin = (200, 0, 0, 300)
div.align = "center"
div.height = 100
div.sizing_mode = "scale_width"
doc.add_root(div)
