net::ERR_BLOCKED_BY_RESPONSE.NotSameOriginAfterDefaultedToSameOriginByCoep 200

Question

Please help solve this problem. I am working with a MERN app. In the app, I upload images to the cloudnary using the API. Then I upload the image on the frontend using secure_url. It works on localhost but does not work on heroku i.e. the image is not uploaded

localhost:

heroku:

Response in browser console:

other images:

upload.js

const express = require("express");
const router = express.Router();
const cloudinary = require("cloudinary");
const { verifyTokenTeacher } = require("./verifyToken");

cloudinary.config({
  cloud_name: process.env.CLOUD_NAME,
  api_key: process.env.CLOUD_API_KEY,
  api_secret: process.env.CLOUD_API_SECRET,
});

// upload image
router.post("/upload", verifyTokenTeacher, (req, res) => {
  try {
    console.log(req.files);
    if (!req.files || Object.keys(req.files).length === 0)
      return res.status(400).json({ msg: "Fayl yuklanmangan" });

    const file = req.files.file; // oxiridagi file bu query parametr
    if (file.size > 1024 * 1024 * 2)
      return res.status(400).json({ msg: "Fayl hajmi 2mb dan kam bo'lsin" });

    // if file no image
    if (
      file.mimetype !== "image/jpeg" &&
      file.mimetype !== "image/jpg" &&
      file.mimetype !== "image/png"
    )
      return res.status(400).json({ msg: "Faqat JPEG va PNG rasm yuklang!" });

    cloudinary.v2.uploader.upload(
      file.tempFilePath,
      { folder: "test1" },
      async (err, result) => {
        if (err) {
          throw err;
        }

        return res
          .status(200)
          .json({ public_id: result.public_id, url: result.secure_url });
      }
    );
  } catch (err) {
    res.status(500).json(err.message);
  }
});

using image url in frontend:

<img src={question.image.url} alt="Rasm"  />

question model: Question.js

    const mongoose = require("mongoose");
    const questionSchema = mongoose.Schema(
      {
        title: {
          type: String,
          required: true,
        },
        themeId: {
          type: String,
          required: true,
        },
        image: {
          type: Object,
          default: null,
        },
      },
      {
        timestamps: true,
      }
    );
    
    module.exports = mongoose.model("Question", questionSchema);

create question router: questions.js

router.post("/", verifyTokenTeacher, async (req, res) => {
  try {
    await Theme.findById(req.body.themeId);
    const newQuestion = new Question(req.body);
    const savedQuestion = await newQuestion.save();
    res.status(201).json(savedQuestion);
  } catch (err) {
    res.status(500).json({ msg: err.message });
  }
});

Answer 1

I was getting the same error while fetching images from cloudinary.

I resolved the error by adding crossorigin="anonymous" in image tag.

Just add crossorigin="anonymous" in your img tag like:

<img crossorigin="anonymous" src="https://example.com/image.jpg">

this should resolve the error.