react-native-config: Can not read .env file on Android.

Hi there. I have a problem with the installation of RNC. It works like a charm on IOS but I can not read the env variables on Android. I checked this repo’s installation guide many times and matched the introduction step by step. I’ve read many issues related to my problem but nothing helped me.

I’ll let you know the implementation, may you can help me. My RN & RNC version: "react-native-config": "^1.5.0", "react-native": "0.70.6".

My gradle file:

project.ext.envConfigFiles = [
    debug: ".env",
    release: ".env",
]

apply from: project(':react-native-config').projectDir.getPath() + "/dotenv.gradle"
...
def enableProguardInReleaseBuilds = false
...
defaultConfig {
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 142
        versionName "0.1.38"
        buildConfigField "boolean", "IS_NEW_ARCHITECTURE_ENABLED", isNewArchitectureEnabled().toString()

        //React-native-config needs this line because we have flavors
        resValue "string", "build_config_package", "com.ifsguide.app"

        // codepush -> https://github.com/microsoft/react-native-code-push/issues/1961
        resValue 'string', "CODE_PUSH_APK_BUILD_TIME", String.format("\"%d\"", System.currentTimeMillis())

        if (isNewArchitectureEnabled()) {
            // We configure the CMake build only if you decide to opt-in for the New Architecture.
            externalNativeBuild {
                cmake {
                    arguments "-DPROJECT_BUILD_DIR=$buildDir",
                        "-DREACT_ANDROID_DIR=$rootDir/../node_modules/react-native/ReactAndroid",
                        "-DREACT_ANDROID_BUILD_DIR=$rootDir/../node_modules/react-native/ReactAndroid/build",
                        "-DNODE_MODULES_DIR=$rootDir/../node_modules",
                        "-DANDROID_STL=c++_shared"
                }
            }
            if (!enableSeparateBuildPerCPUArchitecture) {
                ndk {
                    abiFilters (*reactNativeArchitectures())
                }
            }
        }
}
...
    buildTypes {
        debug {
            signingConfig signingConfigs.debug
        }
        release {
            // Caution! In production, you need to generate your own keystore file.
            // see https://reactnative.dev/docs/signed-apk-android.
            signingConfig signingConfigs.release
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }

    flavorDimensions "version"
    productFlavors {
        production {
            dimension "version"
            applicationId "com.ifsguide.app"
            resValue "string", "app_name", "IFS Guide"
            ndk {
                abiFilters "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
            }
        }

        staging {
            dimension "version"
            applicationId "com.ifsguide.app.staging"
            resValue "string", "app_name", "IFSG-Staging"
            versionName defaultConfig.versionName + "-Staging"
            ndk {
                abiFilters "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
            }
        }
    }
...

And, also this my BuildConfig.java file from /build/generated/source/buildConfig/staging/debug/com/ifsguide/BuildConfig.java.

/**
 * Automatically generated file. DO NOT MODIFY
 */
package com.ifsguide;

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  public static final String APPLICATION_ID = "com.ifsguide.app.staging";
  public static final String BUILD_TYPE = "debug";
  public static final String FLAVOR = "staging";
  public static final int VERSION_CODE = 142;
  public static final String VERSION_NAME = "0.1.38-Staging";
  // Field from default config.
  public static final boolean IS_NEW_ARCHITECTURE_ENABLED = false;
  // Field from default config.
  public static final String RELEASE_MODE = "staging";
}

My .env file in the root of the project:

RELEASE_MODE=staging

So, as you can see, we have the env variable in the generated BuildConfig.java file but IDK why I can not access the variable on Android.