Fail to THREE.BufferGeometryUtils.mergeBufferGeometries

I want to load a model from glTF, combine all the meshes it contains into one, and add it to the scene.
So I tried the following code.

        const gltf = await loader.loadAsync(modelFilePaths[i]);

        const geometries = [];
        gltf.scene.traverse(function(obj) {
            if (obj instanceof THREE.Mesh === true) {
                var mesh = obj;

        const geometry = THREE.BufferGeometryUtils.mergeBufferGeometries(geometries);
        const material = new THREE.MeshNormalMaterial();
        const mesh = new THREE.Mesh(geometry, material);

When executed, the following runtime error occurs Is there something wrong with the usage?

The mergeBufferGeometries(...) function does not support interleaved vertex attributes. If you want to merge these models you’ll need to de-interleave them first. For example:

gltf-transform cp input.glb output.glb --vertex-layout separate

Thank you for reply. Resolved