Regular TensorFlow ops are not supported by this interpreter. Make sure you apply/link the Flex delegate before inference

[kartikpateldev]

Below is the stackTracr logs output

Model Im using is: https://tfhub.dev/tulasiram58827/lite-model/keras-ocr/dr/2?lite-format=tflite

I/tflite (32336): Initialized TensorFlow Lite runtime.
E/flutter (32336): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: PlatformException(Failed to load model, Internal error: Unexpected failure when preparing tensor allocations: Regular TensorFlow ops are not supported by this interpreter. Make sure you apply/link the Flex delegate before inference.
E/flutter (32336): Node number 106 (FlexCTCGreedyDecoder) failed to prepare.
E/flutter (32336): , java.lang.IllegalStateException: Internal error: Unexpected failure when preparing tensor allocations: Regular TensorFlow ops are not supported by this interpreter. Make sure you apply/link the Flex delegate before inference.
E/flutter (32336): Node number 106 (FlexCTCGreedyDecoder) failed to prepare.
E/flutter (32336):
E/flutter (32336): at org.tensorflow.lite.NativeInterpreterWrapper.allocateTensors(Native Method)
E/flutter (32336): at org.tensorflow.lite.NativeInterpreterWrapper.init(NativeInterpreterWrapper.java:101)
E/flutter (32336): at org.tensorflow.lite.NativeInterpreterWrapper.(NativeInterpreterWrapper.java:66)
E/flutter (32336): at org.tensorflow.lite.Interpreter.(Interpreter.java:287)
E/flutter (32336): at sq.flutter.tflite.TflitePlugin.loadModel(TflitePlugin.java:208)
E/flutter (32336): at sq.flutter.tflite.TflitePlugin.onMethodCall(TflitePlugin.java:92)
E/flutter (32336): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (32336): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/flutter (32336): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/flutter (32336): at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (32336): at android.os.MessageQueue.next(MessageQueue.java:336)
E/flutter (32336): at android.os.Looper.loop(Looper.java:182)
E/flutter (32336): at android.app.ActivityThread.main(ActivityThread.java:7782)
E/flutter (32336): at java.lang.reflect.Method.invoke(Native Method)
E/flutter (32336): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/flutter (32336): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)
E/flutter (32336): , null)
E/flutter (32336): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:597:7)
E/flutter (32336): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:158:18)
E/flutter (32336):
E/flutter (32336): #2 Tflite.loadModel (package:tflite/tflite.dart:15:12)
E/flutter (32336):
E/flutter (32336): #3 _HomePageState.loadModel (package:flutter_realtime_scanner/home.dart:34:15)
E/flutter (32336):
E/flutter (32336):
V/SensorManager(32336): RegisterListener bmi160 Accelerometer Non-wakeup type:1 delay:200000us by android.view.OrientationEventListener$SensorEventListenerImpl
D/CameraManager(32336): mHypnusCtrl is true
W/CameraManagerGlobal(32336): ignore the torch status update of camera: 3
W/Gralloc3(32336): allocator 3.x is not supported
W/System (32336): A resource failed to call close.
W/System (32336): A resource failed to call close.
D/RenderScript HIDL Adaptation(32336): IRenderScriptDevice::getService()
D/RenderScript HIDL Adaptation(32336): IRenderScriptDevice::getService() returned 0x7e3a283be0
D/RenderScript HIDL Adaptation(32336): HIDL successfully loaded.
V/RenderScript(32336): Successfully loaded runtime: libRSDriver_adreno.so
D/ (32336): Successfully queried cache dir: /data/user_de/0/com.example.flutter_realtime_scanner/code_cache
D/RenderScript(32336): Setting cache dir: /data/user_de/0/com.example.flutter_realtime_scanner/code_cache
E/flutter (32336): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: PlatformException(Failed to run model, Attempt to invoke virtual method 'org.tensorflow.lite.Tensor org.tensorflow.lite.Interpreter.getInputTensor(int)' on a null object reference, java.lang.NullPointerException: Attempt to invoke virtual method 'org.tensorflow.lite.Tensor org.tensorflow.lite.Interpreter.getInputTensor(int)' on a null object reference
E/flutter (32336): at sq.flutter.tflite.TflitePlugin.feedInputTensor(TflitePlugin.java:297)
E/flutter (32336): at sq.flutter.tflite.TflitePlugin.feedInputTensorFrame(TflitePlugin.java:372)
E/flutter (32336): at sq.flutter.tflite.TflitePlugin$RunModelOnFrame.(TflitePlugin.java:509)
E/flutter (32336): at sq.flutter.tflite.TflitePlugin.onMethodCall(TflitePlugin.java:111)
E/flutter (32336): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/flutter (32336): at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/flutter (32336): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
E/flutter (32336): at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (32336): at android.os.MessageQueue.next(MessageQueue.java:336)
E/flutter (32336): at android.os.Looper.loop(Looper.java:182)
E/flutter (32336): at android.app.ActivityThread.main(ActivityThread.java:7782)
E/flutter (32336): at java.lang.reflect.Method.invoke(Native Method)
E/flutter (32336): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/flutter (32336): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:981)
E/flutter (32336): , null)
E/flutter (32336): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:597:7)
E/flutter (32336): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:158:18)
E/flutter (32336):
E/flutter (32336): #2 Tflite.runModelOnFrame (package:tflite/tflite.dart:67:12)
E/flutter (32336):
E/flutter (32336):
W/System (32336): A resource failed to call destroy.
I/chatty (32336): uid=10753(com.example.flutter_realtime_scanner) FinalizerDaemon identical 1 line
W/System (32336): A resource failed to call destroy.
I/Choreographer(32336): Skipped 1 frames! The application may be doing too much work on its main thread.
I/Choreographer(32336): Skipped 1 frames! The application may be doing too much work on its main thread.