🔧 AndroidRuntime: java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module.

[Amit-Agrawal0177]

How were you trying to build the app?

After using react-native-vision-camera latest ver patch, the project builds successfully, but the app is crashing.

Here’s the logcat output showing the error:

08-22 00:24:18.913 14517 14582 E AndroidRuntime: java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module.

08-22 00:24:18.913 14517 14582 E AndroidRuntime: at com.facebook.react.bridge.BridgeReactContext.getJSModule(BridgeReactContext.java:111)

08-22 00:24:18.913 14517 14582 E AndroidRuntime: at com.mrousavy.camera.react.CameraDevicesManager.sendAvailableDevicesChangedEvent(CameraDevicesManager.kt:102)

Can anyone please help me figure out what’s going wrong?

Full build logs

08-22 00:24:18.913 14517 14582 E AndroidRuntime: java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module.
08-22 00:24:18.913 14517 14582 E AndroidRuntime:     at com.facebook.react.bridge.BridgeReactContext.getJSModule(BridgeReactContext.java:111)
08-22 00:24:18.913 14517 14582 E AndroidRuntime:     at com.mrousavy.camera.react.CameraDevicesManager.sendAvailableDevicesChangedEvent(CameraDevicesManager.kt:102)

Project dependencies

"dependencies": {
    "react": "19.1.0",
    "react-native": "^0.81.0",
    "react-native-vision-camera": "^4.7.1",
    "react-native-worklets-core": "^1.6.2"
  }

VisionCamera Version

4.7.1

Target platforms

Android

Operating system

MacOS

Can you build the VisionCamera Example app?

No, I cannot build the Example app either

Additional information

• I am using Expo
• I have enabled Frame Processors (react-native-worklets-core)
• I have read the Troubleshooting Guide
• I agree to follow this project's Code of Conduct
• I searched for similar issues in this repository and found none.

[simoneantonicchio]

Same issue

[cveklica]

same here, it is crashing because it attempts to call into JS while the React instance might not yet be initialized. On React Native 0.81, this is strictly disallowed and causes the crash you’re seeing.
So in CameraDevicesManager.kt around line 102 in function sendAvailableDevicesChangedEvent we need if to check that:

fun sendAvailableDevicesChangedEvent() { if (reactContext.hasActiveReactInstance()) { val eventEmitter = reactContext.getJSModule(RCTDeviceEventEmitter::class.java) val devices = getDevicesJson() eventEmitter.emit("CameraDevicesChanged", devices) } }

Here is a full patch with some other stuff for RN 0.81.0

react-native-vision-camera+4.7.1.patch

[sjorsdehaas-efteling]

We have the same issue here on RN 0.81.0.
The patch mentioned by @cveklica has a fix but changes a lot more than necessary (31k lines for a patch is a little insane).
The fix by @cveklica wraps the sendAvailableDevicesChangedEvent() in an if statement. This will cause it to fail silently should situation arise.

I've added the patch we use to fix 0.81.0 issues. Rather than wrapping in an if statement, we postpone the first call to sendAvailableDevicesChangedEvent() to the initialize() method, rather than calling it in the init constructor.

A patch for the if statement is added separately in case you want to fail silently in these cases.

These are added for both yarn patching and patch-package

with-if-yarn-patch.patch
with-if-patch-package.patch
yarn-patch.patch
patch-package-patch.patch

[TomWq]

I encountered the same problem，The new architecture has not been activated.
"react-native-vision-camera": "^4.6.4",
"react-native": "0.76.9",
java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module.
at com.facebook.react.bridge.BridgeReactContext.getJSModule(BridgeReactContext.java:95)
at com.mrousavy.camera.react.CameraDevicesManager.sendAvailableDevicesChangedEvent(CameraDevicesManager.kt:102)
at com.mrousavy.camera.react.CameraDevicesManager$1.invokeSuspend(CameraDevicesManager.kt:74)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:101)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
at java.lang.Thread.run(Thread.java:1119)
Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@39e6a66, java.util.concurrent.ThreadPoolExecutor@fc291a7[Running, pool size = 2, active threads = 1, queued tasks = 0, completed tasks = 3]]

[alexrififi]

On version 0.75.5 this also happens sometimes. Mainly when reloading an application from the Reactotron (this did not happen before)

"dependencies": {
  "react": "18.3.1",
  "react-native": "0.75.5",
  "react-native-vision-camera": "4.7.1"
}

FATAL EXCEPTION: pool-12-thread-3
java.lang.IllegalStateException: Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#getJSModule should only happen once initialize() has been called on your native module.
	at com.facebook.react.bridge.BridgeReactContext.getJSModule(BridgeReactContext.java:95)
	at com.mrousavy.camera.react.CameraDevicesManager.sendAvailableDevicesChangedEvent(CameraDevicesManager.kt:102)
	at com.mrousavy.camera.react.CameraDevicesManager$1.invokeSuspend(CameraDevicesManager.kt:74)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:101)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)
	Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@452b8bd, java.util.concurrent.ThreadPoolExecutor@ab06eb2[Running, pool size = 1, active threads = 1, queued tasks = 0, completed tasks = 3]]

[durupanya]

same issue
"dependencies": {
"react": "19.0.0",
"react-native": "0.79.2",
"react-native-vision-camera": "4.7.2"
}

[mohitGraffers]

Same issue I got it.

I am experiencing a crash when using React Native Vision Camera on Android after upgrading to React Native 0.77.0.

Versions:

react-native: 0.77.0

react-native-vision-camera: ^4.7.1

Play console Logs:

com.facebook.react.bridge.BridgeReactContext.getJSModule
java.lang.IllegalStateException

Crashlytics Logs:

BridgeReactContext.getJSModule
java.lang.IllegalStateException - Tried to access a JS module before the React instance was fully set up. Calls to ReactContext#get