Error with Springboot- unparsable content bpmn:process detected

Hello

I am building a simple Springboot app using video tutorial of Niall Deehan

I get the below error while opening process.bpmn(downloaded from start.camunda.com springboot)
in Camunda Modeller.

Any idea how this can be fixed ?
[C:\Installs\Camunda Projects\Travel Management\src\main\resources\process.bpmn] unparsable content bpmn:process detected
line: 2
column: 2