No Active Session or not authenticated [NextJS + App Router]

I have a server action that I’m using to call a protected route that I’ve created, which looks like so:

'use server';
import { getSession } from '@auth0/nextjs-auth0';
export const uploadImage = async (base64ImageString) => {
  const { accessToken } = await getSession();
  console.log(accessToken);
  try {
    const response = await fetch(
      process.env.NEXT_JS_PUBLIC_LOCALHOST + '/api/someendpoint,
      {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          Authorization: `Bearer ${accessToken}`,
        },
        body: {
          image: base64ImageString,
        },
      }
    );
    const result = await response.json();
    console.log(result);
    return response.data;
  } catch (error) {
    console.log(error);
    return {};
  }
};

and I am calling a protected route, which looks like so:

import { getSession, withApiAuthRequired } from '@auth0/nextjs-auth0';
import { NextResponse } from 'next/server';

export const POST = withApiAuthRequired(async (req, res) => {
  try {
    const session = await getSession(req);
    console.log('POST REQUEST SESSION', session);
    return res.json({
      msg: 'looking good',
    });
  } catch (error) {
    console.error('Error uploading file:', error);
    return NextResponse.json(
      { message: 'File upload failed' },
      { status: 500 }
    );
  }
});

When I call uploadImage I do see the accessToken get logged to the console, but my protected route doesn’t seem to allow the request. I keep seeing the below log from uploadImage within the console:

{
  error: 'not_authenticated',
  description: 'The user does not have an active session or is not authenticated'
}

Does anyone have any tips for why this is happening?