I’m trying to generate an android build for my React-native project, but I’m getting this error during compilation. I can’t find the reason for the problem

FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction

> Task :app:compileDebugKotlin
FAILED
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainActivity.kt:18:14 Unresolved reference: R
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainActivity.kt:35:11 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:35:60 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:37:52 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:38:51 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:48:10 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:51:9 Unresolved reference: BuildConfig
e: file:///home/expo/workingdir/build/android/app/src/main/java/com/schoolmobile/inspell/MainApplication.kt:55:9 Unresolved reference: BuildConfig
> Task :expo-modules-core:buildCMakeDebug[arm64-v8a]
> Task :react-native-reanimated:buildCMakeDebug[arm64-v8a]
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:compileDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction
   > Compilation error. See log for more details```



I followed the steps for updating native projects from the Expo documentation
https://docs.expo.dev/bare/upgrade/?fromSdk=49&toSdk=50#androidbuildgradle

[enter image description here](https://i.sstatic.net/bm6yZMPU.png)