[Can't open process session]

{
  "origin": "Classic pages client",
  "details": " - Error code : [18]",
  "diagnoses": [
    {
      "severity": "error",
      "sdataCode": "0",
      "stackTrace": "Unexpected token # in JSON at position 15850\nSyntaxError: Unexpected token # in JSON at position 15850\n    at JSON.parse (<anonymous>)\n    at VisualProcessField.setValue (http://124.70.195.220:8124/@sage/syracuse-ui/lib/field/visualProcess/visualProcessField:143:29)\n    at WinModel.eval (http://124.70.195.220:8124/@sage/syracuse-ui/lib/fusion/core/client/sap/window:1464:11)\n    at http://124.70.195.220:8124/syracuse-ui/deps/underscore.js:5:751\n    at Function.h.each.h.forEach (http://124.70.195.220:8124/syracuse-ui/deps/underscore.js:5:1934)\n    at WinModel._setDataField (http://124.70.195.220:8124/@sage/syracuse-ui/lib/fusion/core/client/sap/window:1462:6)\n    at WinModel.setEntitiesValue (http://124.70.195.220:8124/@sage/syracuse-ui/lib/fusion/core/client/sap/window:1349:131)\n    at WinStack.applyChange (http://124.70.195.220:8124/@sage/syracuse-ui/lib/fusion/core/client/sap/window:391:76)\n    at SapController.eval (http://124.70.195.220:8124/@sage/syracuse-ui/lib/fusion/core/client/sap/controller:1353:36)\n    at http://124.70.195.220:8124/syracuse-ui/deps/underscore.js:5:751",
      "message": "Stack log"
    }
  ]
}