Non utf-8 charachters present in schema json SOL003 VNFLifecyManagement-API

After running a command to highlight non utf-8 charachters:

grep -axv '.*' schemas/VnfLcmOperationOccurrenceNotification.schema.json

          "description": "If present, this attribute signals modifications of the \"vnfProvider\" attribute in \"VnfInstance\". If present, this attribute (which depends on the value of the \"vnfPkgId\" attribute) was modified implicitly following a request to modify the \"vnfPkgId\" attribute, by copying the value of this attribute from the VNFD in the VNF Package identified by the \"vnfPkgId� attribute.\n",
          "description": "If present, this attribute signals modifications of the \"vnfProductName\" attribute in \"VnfInstance\". If present, this attribute (which depends on the value of the \"vnfPkgId\" attribute) was modified implicitly following a request to modify the \"vnfPkgId\" attribute, by copying the value of this attribute from the VNFD in the VNF Package identified by the \"vnfPkgId� attribute.\n",

Get File(HealVNFWorkflow.robot) run keyword fails because of this