Error: Failed to create a new MMKV instance: React Native is not running on-device

[MOHAMED-LAAGUILI]

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Error: Failed to create a new MMKV instance: React Native is not running on-device
i already enabled and disabled new arch on v 2 and 3

and tried to update evry possible vertsion to v 4
"expo": "^54.0.0",
"react-native": "0.78.x",

"react-native-mmkv": "^2.12.2",
"react-native-mmkv": "^3.x.x",
"react-native-mmkv": "3.0.0-beta.5",
"react-native-mmkv": "4.0.0",

some of u had experienced it guys some one may had figure it out a solution or alternative that works on mobile ??
pls . i know im messing something
im willing to provide files like app.json/app.config.ts & package.json & eas.json
@saiyam-zepto-dev
@MohammadAliNajm
@pablospaniard
@vytautas-urbelis

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[itzsebas121]

The error:

Error: Could not create a new instance of MMKV: React Native is not running on the device.

means the native MMKV module isn’t being loaded, because:

You’re running inside Expo Go (which doesn’t support native modules like MMKV).

The package wasn’t properly linked during a prebuild or EAS build.

You have multiple MMKV versions (2.x, 3.x, 4.x) conflicting in your project.

✅ Fixes
Option 1: Use Expo + Custom Build (recommended)

Remove duplicate versions:

npm uninstall react-native-mmkv
npm install react-native-mmkv@3.1.0

Version 4.0.0 still has compatibility issues with Expo and the new architecture.

Prebuild your project to link native modules:

npx expo prebuild

Run a custom EAS build (not Expo Go):

eas build --profile development --platform android

Then install it on your real device or emulator.

Make sure you’re importing correctly:

import { MMKV } from 'react-native-mmkv';

const storage = new MMKV();

[MOHAMED-LAAGUILI]

i dont think u understand the issue here
is this a gpt answer

if u realy read briefly i said i used all the version each one at time its impossible to run A project with multi version
react-native-mmkv": "^2.12.2",
"react-native-mmkv": "^3.x.x",
"react-native-mmkv": "3.0.0-beta.5",
"react-native-mmkv": "4.0.0",