Import file BPMN error

i try import file bpmn, but i got error
failed to parse document as bpmn:Definitions
unparsable content detected
line: 1
column: 0
nested error: unexpected element

Process data flow for Farm (1).bpmn (44.6 KB)

You diagram is not BPMN 2.0. It starts with

<?xml version="1.0" encoding="utf-8"?>
<BPMN BPMNVersion="1.9">
  <BusinessProcessDiagram id="(f9c6d725-d570-4adf-80b3-2a8ca9444eaf)">
    <Name>New BPMN Model</Name>
    <Description />
    <Version />
    <Author />

I’m curious. How and when was this diagram created?