Error: Realm at path *** already opened with a different schema mode in React Native

[bezenson]

How frequently does the bug occur?

Always

Description

Hello! I'm developing React Native app with realm.

I'm initializing app with RealmProvider:

 <RealmProvider schema={[RealmList, RealmTask]}>

At some point I've decided to change schema:

export class RealmTask extends Realm.Object<RealmTask> {
  _id: BSON.ObjectId = new BSON.ObjectId();
  completed: boolean = false;
  createdAt: Date = new Date();
  // date: Date | null = null;  <<<< BEFORE
  date?: Date; // <<<< AFTER
  listId!: BSON.ObjectId;
  order: number = 0;
  reminderEnabled: boolean = false;
  title: string = '';
  updatedAt: Date = new Date();

  static primaryKey = '_id';
}

And after that I've got error:

Error: Realm at path '/Users/[user]/Library/Developer/CoreSimulator/Devices/F93F6540-1289-4F0A-9FFC-FAEAE781EDEA/data/Containers/Data/Application/5A6B5E22-3848-4D24-AF59-B7F2B0528A74/Documents/default.realm' already opened with a different schema mode.

I am developing on iOS simulator.

1. I've tried to delete app
2. Tried to add deleteRealmIfMigrationNeeded
3. Deleted this file manually
4. Launched another clean simulator

Nothing helped. Only if I roll back schema changes.

How can I fix that? Really got stuck with it.

Stacktrace & log output

No response

Can you reproduce the bug?

Always

Reproduction Steps

No response

Version

12.11.1

What services are you using?

Local Database only

Are you using encryption?

No

Platform OS and version(s)

iOS 17.5 Simulator

Build environment

No response

Cocoapods version

1.15.2

[sync-by-unito]

➤ PM Bot commented:

Jira ticket: RJS-2855

[kneth]

@bezenson Is it possible that you open the Realm without schema or the old schema somewhere else in your app? The error message could hint that.

[bezenson]

Oh, that's true. I was calling open() in another place. Removing this fixed the issue. Thank you for pointing me out and sorry for bothering :)

[kneth]

@bezenson Good to hear that you found the second place