Hi, and welcome to the Camunda Forum!
You’ve posted your BPMN process which really helps the others in the community troubleshoot!
As noted in Unable to deploy model from Modeler, "SAXException while parsing input stream" for some reason there are elements with -color being added to current models.
Make sure to remove them from your model, and it should load.
Specifically from line 498:
<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_bdb7be31-dea4-4bd7-8995-ca1cefdc66e8">