Shader compilation failure when setting height map

NVD3DREL: GR-805 : DX9 Overlay is DISABLED
QSpirvCompiler: Failed to parse shader
Failed to compile fragment shader 
 
"mesh default material pipeline-- ;hasLighting=true;hasIbl=true;lightCount=1;specularEnabled=true;fresnelEnabled=true;specularModel=KGGX;;diffuseMap={;;;;};emissiveMap={;;;;};specularMap={;;;;};baseColorMap={enabled=true;;;identity=true;};bumpMap={;;;;};specularAmountMap={;;;;};normalMap={enabled=true;;;identity=true;};clearcoatNormalMap={;;;;};opacityMap={;;;;};roughnessMap={enabled=true;;;identity=true;};metalnessMap={;;;;};occlusionMap={;;;;};translucencyMap={;;;;};heightMap={enabled=true;;;identity=true;};clearcoatMap={;;;;};clearcoatRoughnessMap={;;;;};transmissionMap={;;;;};thicknessMap={;;;;};opacityMap_channel=R;roughnessMap_channel=G;metalnessMap_channel=R;occlusionMap_channel=R;translucencyMap_channel=R;heightMap_channel=R;clearcoatMap_channel=R;clearcoatRoughnessMap_channel=R;transmissionMap_channel=R;thicknessMap_channel=R;boneCount=0;alphaMode=Default;;vertexAttributes={position=true;normal=true;texcoord0=true;;;;}};morphTargetCount=0;morphTarget0Attributes={;;;;;;}};morphTarget1Attributes={;;;;;;}};morphTarget2Attributes={;;;;;;}};morphTarget3Attributes={;;;;;;}};morphTarget4Attributes={;;;;;;}};morphTarget5Attributes={;;;;;;}};morphTarget6Attributes={;;;;;;}};morphTarget7Attributes={;;;;;;}}" 
 "ERROR: :856: 'qt_NormalMap_uv_coords1' : undeclared identifier \nERROR: :856: '=' :  cannot convert from ' global float' to ' temp highp 2-component vector of float'\nERROR: :856: '' : compilation terminated \nERROR: 3 compilation errors.  No code generated."

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import QtQuick
import QtQuick.Window
import QtQuick.Controls

import Qt.labs.platform
import Qt.labs.settings

import QtQuick3D
import QtQuick3D.Helpers
import QtQuick3D.AssetUtils

Window {
    visible: true
    width: 800
    height: 600

    //! [base scene]
    View3D {
        id: view3D
        anchors.fill: parent
        environment: SceneEnvironment {
            probeExposure: 0.0
            backgroundMode: SceneEnvironment.SkyBox
            temporalAAEnabled: true
            lightProbe: Texture {
                source: "maps/OpenfootageNET_lowerAustria01-1024.hdr"
            }

        }

//        DirectionalLight {
//            eulerRotation: "-30, -20, -40"
//            //ambientColor: "#333"
//            color: "#ffffff"
//            brightness: 0.3
//            castsShadow: true
//        }


        PerspectiveCamera {
            id: camera
            position: "0, 150, 400"
            Component.onCompleted: view3D.resetView()
        }

    //! [base scene]


        function resetView() {
            camera.position = "0, 150, 400"
            camera.eulerRotation = "-15, 0, 0"
            //importNode.eulerRotation = "0, 0, 0"
            helper.resetScale()
            helper.resetPosition()
        }

        //! [instancing]
        //! [instancing]

        QtObject {
            id: helper
            property real boundsDiameter: 0
            property vector3d boundsCenter
            property vector3d boundsSize
            property alias scaleFactor: wheelHandler.factor
            property alias position: importNode.position

            function resetScale() {
                wheelHandler.factor = boundsDiameter ? 300 / boundsDiameter : 1.0
            }
            function resetPosition() {
                position = Qt.vector3d(-boundsCenter.x*scaleFactor, -boundsCenter.y*scaleFactor, -boundsCenter.z*scaleFactor)
            }

            function updateBounds(bounds) {
                boundsSize = Qt.vector3d(bounds.maximum.x - bounds.minimum.x,
                                         bounds.maximum.y - bounds.minimum.y,
                                         bounds.maximum.z - bounds.minimum.z)
                boundsDiameter = Math.max(boundsSize.x, boundsSize.y, boundsSize.z)
                boundsCenter = Qt.vector3d((bounds.maximum.x + bounds.minimum.x) / 2,
                                           (bounds.maximum.y + bounds.minimum.y) / 2,
                                           (bounds.maximum.z + bounds.minimum.z) / 2 )
                console.log("Bounds changed: ", bounds.minimum, bounds.maximum,
                            " center:", boundsCenter, "diameter:", boundsDiameter)
                view3D.resetView()
            }
        }

        //! [bounds]
        PrincipledMaterial {
            id: default_material_material
            baseColorMap: Texture { source: "file:albedo.jpg" }
            normalMap: Texture { source: "file:normal.jpg" }
            roughnessMap: Texture { source: "file:roughness.jpg" }
            heightMap: Texture { source: "file:displacement.jpg" }
        }

        Model {
            id: importNode
            source: "file:asset.mesh"
            scale: Qt.vector3d(helper.scaleFactor, helper.scaleFactor, helper.scaleFactor)
            onBoundsChanged: helper.updateBounds(bounds)
            eulerRotation: Qt.vector3d(-90, 0, 180)
            receivesShadows: true
            castsShadows: true
            materials: [
                default_material_material
            ]

            PointLight {
                position: importNode.bounds.maximum.plus(Qt.vector3d(-100, 100, -100))
                color: "#ffffff"
                castsShadow: true
            }

        }
        //! [bounds]
    }

    //! [camera control]
    WasdController {
        controlledObject: camera
    }

    WheelHandler {
        id: wheelHandler
        property real factor: 10.0
        onWheel: (event)=> {
            if (event.angleDelta.y > 0)
                factor *= 1.1
            else
                factor /= 1.1
       }
    }

    PointHandler {
        id: rotateHandler
        acceptedButtons: Qt.MiddleButton
        onPointChanged: {
            if (Math.abs(point.velocity.x) >= Math.abs(point.velocity.y))
                importNode.eulerRotation.y += point.velocity.x / 2000
            else
                importNode.eulerRotation.x += point.velocity.y / 2000
        }
    }
    //! [camera control]
}