Possible Unhandled Promise Rejection: ReferenceError: Property 'VertexAttribute' doesn't exist

script.js

const Materials = require('Materials');
const Textures =  require('Textures');
const Shaders = require('Shaders');
const Time = require('Time');
const Reactive = require('Reactive');

const Diagnostics = require("Diagnostics");
const {log} = require('Diagnostics');

async function main()
{
    
    const myMaterial = await Materials.findFirst('material0');
    const myCameraTexture = await (await Textures.findFirst('cameraTexture0')).signal;

    log('this prints');
    let uvs = await Shaders.vertexAttribute(VertexAttribute.TEX_COORDS).catch(err => log(err));
    log('this does not print');
    
    let ct = Reactive.mul(Time.ms,0.001);
    let curve = Reactive.abs(Reactive.sin(ct));

    
    let color = await Shaders.textureSampler(myCameraTexture, uvs).catch(err => log(err));

    let modulationColor = Reactive.pack4(curve,0,0,1);
    let finalColor = Reactive.mul(color, modulationColor);
    
    myMaterial.setTextureSlot('DIFFUSE', finalColor);
};
main();