I keep getting this error whenever I save something to the database. Regardless if its numbers, text ect, it happens and I have no idea why. Two months prior everything worked fine and every time I saved something I got no errors, but starting a month ago this occurred:
Unhandled rejection TypeError: Cannot read property 'indexOf' of undefined
at model.isSelected (/var/www/html/node_modules/mongoose/lib/document.js:2056:12)
at model.<anonymous> (/var/www/html/node_modules/mongoose-url-slugs/index.js:215:18)
at callMiddlewareFunction (/var/www/html/node_modules/kareem/index.js:483:23)
at next (/var/www/html/node_modules/kareem/index.js:58:7)
at Kareem.execPre (/var/www/html/node_modules/kareem/index.js:87:8)
at Kareem.wrap (/var/www/html/node_modules/kareem/index.js:266:8)
at model.$__validate (/var/www/html/node_modules/kareem/index.js:376:11)
at /var/www/html/node_modules/mongoose/lib/document.js:2226:10
at promiseOrCallback (/var/www/html/node_modules/mongoose/lib/helpers/promiseOrCallback.js:9:12)
at model.Document.validate (/var/www/html/node_modules/mongoose/lib/document.js:2221:10)
at model.validateBeforeSave (/var/www/html/node_modules/mongoose/lib/plugins/validateBeforeSave.js:35:12)
at callMiddlewareFunction (/var/www/html/node_modules/kareem/index.js:483:23)
at next (/var/www/html/node_modules/kareem/index.js:58:7)
at Kareem.execPre (/var/www/html/node_modules/kareem/index.js:87:8)
at Kareem.wrap (/var/www/html/node_modules/kareem/index.js:266:8)
at model.$__save (/var/www/html/node_modules/kareem/index.js:376:11)
at /var/www/html/node_modules/mongoose/lib/model.js:492:10
at /var/www/html/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:5
at Promise._execute (/var/www/html/node_modules/bluebird/js/release/debuggability.js:384:9)
at Promise._resolveFromExecutor (/var/www/html/node_modules/bluebird/js/release/promise.js:518:18)
at new Promise (/var/www/html/node_modules/bluebird/js/release/promise.js:103:10)
at promiseOrCallback (/var/www/html/node_modules/mongoose/lib/helpers/promiseOrCallback.js:30:10)
I am using Node with Mongodb Atlas and its setup with passport. Can anyone please tell me what is causing this? I forgot to mention there is no "indexOf" in the code, only located in the node modules folder which is another reason why this is strange. Running Mongoose 5.11.8, Mongoose-url-slugs 1.0.2 and Bluebird 3.7.2.
There is an unhanded next object call.
Check if your middlewares or mongo hooks are missign the next param that should be called after the middleware/hook execution (it could be the pre hook call on your schema object before saving).
I had the same error a couple of years ago. Adding next as a param of the callback fucntion might fix it
Here some example as a reference where missing the next param of the async function will raised a similar error:
// user.model.js
userScheme.pre('save', async function (next) {
const user = this;
try {
if (!user.isModified('password')) {
return next();
}
// generates the salt to encrypt the password
const salt = await bcrypt.genSalt(10);
// generate hashed password
const hash = await bcrypt.hash(user.password, salt);
// this is the hashed password that we are going to save in the DB
user.password = hash;
} catch (err) {
next(err);
}
});