Getting Error: Cannot read property 'seq' of null

[sannminwin]

I have installed
"mongoose": "^5.11.12",
"mongoose-sequence": "^5.3.1",

and use mongoose-sequence in mongoose Model file as below

const mongoose = require("mongoose");
const AutoIncrement = require('mongoose-sequence')(mongoose);

const AlbumSchema = new mongoose.Schema({
userId: {
  type: Number,
},
title: {
  type: Object
},
genre: {
  type: Array
},
artists: {
  type: Array,
},
composers: {
  type: Array
},
releaseDate: {
  type: String
}
});

AlbumSchema.plugin(AutoIncrement, {inc_field: 'albumId'});

module.exports = mongoose.model('Album', AlbumSchema);

When I run Album.create(data) in controller I am getting this error

[christohill]

Old issue, but I ran into this as well on newer versions:

"mongoose": "^7.7.0"
"mongoose-sequence": "^6.0.1"

I fixed it by creating the inc_field on the schema with type: Number

In this case:

Schema({
  ...
  albumId: { type: Number }
  ...
})