upload.js

const { sanitizeEntity } = require('strapi-utils');

module.exports = {
  async upload(ctx) {
    const {
      request: { files: { files } = {} },
    } = ctx;

    const uploadedFiles = await strapi.plugins.upload.services.upload.upload({
      data: {},
      files,
    });

    const entity = await strapi.plugins['users-permissions'].services.user.edit({ id: ctx.state.user.id }, { image: uploadedFiles[0].id });
    
    
    return sanitizeEntity(entity, { model: strapi.query('user', 'users-permissions').model });
  },
};