Using ConvexHttpClient in a Next (App router) API route

 Module not found: Can't resolve 'encoding' in '/Users/MYUSER/CodeProjects/flimmer/node_modules/node-fetch/lib'
web:dev: 
web:dev: Import trace for requested module:
web:dev: ../../node_modules/node-fetch/lib/index.js
web:dev: ../../node_modules/convex/dist/esm/browser/http_client-node.js
web:dev: ../../node_modules/convex/dist/esm/browser/index-node.js
web:dev: ../../packages/backend/httpClient.ts
web:dev: ./src/app/api/mux-endpoint/route.ts

// packages/backend/httpClient.ts
import { ConvexHttpClient } from "convex/browser";

export const convexHttpClient = new ConvexHttpClient(
  process.env.NEXT_PUBLIC_CONVEX_URL
);

// api/mux-endpoint/route.ts
import { api } from "backend/convex/_generated/api";
import { convexHttpClient } from "backend/httpClient";
import { NextResponse } from "next/server";

export async function POST(req: Request) {
  try {
    const data = await req.json();

    if (data.type === "video.asset.ready") {
      const { id, object, environment, data: videoData } = data;

      // turn videoData into a string
      const videoDataString = JSON.stringify(videoData);

      const eventId = await convexHttpClient.mutation(api.app.createMuxEvent, {
        data: videoDataString,
      });
      
  // rest of file, error handling etc...
  }
}