🐛 Fixed missing source + resized images producing rendered 404

ghost/core/core/frontend/web/middleware/handle-image-sizes.js

@@ -139,6 +139,11 @@ module.exports = function handleImageSizes(req, res, next) {
         if (err.code === 'SHARP_INSTALLATION' || err.code === 'IMAGE_PROCESSING' || err.errorType === 'NoContentError') {
             return redirectToOriginal();
         }
+
+        if (err.errorType === 'NotFoundError') {
+            return next();
+        }
+
         next(err);
     });
 };

ghost/core/test/unit/frontend/web/middleware/handle-image-sizes.test.js

@@ -3,6 +3,7 @@ const sinon = require('sinon');
 const storage = require('../../../../../core/server/adapters/storage');
 const activeTheme = require('../../../../../core/frontend/services/theme-engine/active');
 const handleImageSizes = require('../../../../../core/frontend/web/middleware/handle-image-sizes.js');
+const errors = require('@tryghost/errors');
 const imageTransform = require('@tryghost/image-transform');
 
 const fakeResBase = {
@@ -673,5 +674,36 @@ describe('handleImageSizes middleware', function () {
                 done();
             });
         });
+
+        it('goes to next middleware with no error if source and resized image 404', function (done) {
+            dummyStorage.exists = async function () {
+                return false;
+            };
+            dummyStorage.read = async function () {
+                throw new errors.NotFoundError({
+                    message: 'File not found'
+                });
+            };
+
+            const fakeReq = {
+                url: '/size/w1000/2020/02/test.png',
+                originalUrl: '/2020/02/test.png'
+            };
+
+            const fakeRes = {
+                redirect() {
+                    done(new Error('Should not have called redirect'));
+                },
+                setHeader() {},
+                type: function () {}
+            };
+
+            handleImageSizes(fakeReq, fakeRes, function next(err) {
+                if (err) {
+                    return done(err);
+                }
+                done();
+            });
+        });
     });
 });