[Android Software/Hacking General [Developers Only]] gidano:
Unfortunately I get an error during recompile, I don't know what is causing it. The same is true for aptool v2.5, AAPT and AAPT2.

Decompiling APK file... (Press ESC to cancel)

Executing command: java.exe -jar "C:\APK Easy Tool\Apktool\apktool_2.6.0.jar" d -f -s -api 30 -o "C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16" "C:\APK Easy Tool\NetSpeed.Indicator.v1.7.16.apk"

I: Using Apktool 2.6.0 on NetSpeed.Indicator.v1.7.16.apk
I: Loading resource table...
I: Decoding AndroidManifest.xml with resources...
I: Loading resource table from file: C:\Users\gidan\AppData\Local\apktool\framework\1.apk
I: Regular manifest package...
I: Decoding file-resources...
I: Decoding values */* XMLs...
I: Copying raw classes.dex file...
I: Copying assets and libs...
I: Copying unknown files...
I: Copying original files...
I: Copying META-INF/services directory

Decompile successful.
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Compiling APK file... (Press ESC to cancel)

Executing command: java.exe -jar "C:\APK Easy Tool\Apktool\apktool_2.6.0.jar" b -f --use-aapt2 -api 30 -nc -o "C:\APK Easy Tool\2-Recompiled APKs\NetSpeed.Indicator.v1.7.16-HU.gidano.apk" "C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16"

I: Using Apktool 2.6.0
I: Copying C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16 classes.dex file...
I: Building resources...
W: C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\res\values-v31\colors.xml:55: error: resource android:color/Indigo_800 is private.
W: C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\res\values-v31\colors.xml:56: error: resource android:color/Indigo_700 is private.
W: C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\res\values-v31\colors.xml:58: error: resource android:color/GM2_grey_800 is private.
W: C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\res\values-v31\colors.xml:59: error: resource android:color/Blue_800 is private.
W: C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\res\values-v31\colors.xml:60: error: resource android:color/Blue_700 is private.
W: error: failed linking references.
brut.androlib.AndrolibException: brut.common.BrutException: could not exec (exit code = 1): [C:\Users\gidan\AppData\Local\Temp\brut_util_Jar_22436033769591183602658030594761266214.tmp, link, -o, C:\Users\gidan\AppData\Local\Temp\APKTOOL2380669615183227939.tmp, --package-id, 127, --min-sdk-version, 23, --target-sdk-version, 31, --version-code, 129, --version-name, v1.7.16, --no-auto-version, --no-version-vectors, --no-version-transitions, --no-resource-deduping, -e, C:\Users\gidan\AppData\Local\Temp\APKTOOL501024718997386057.tmp, -0, arsc, -I, C:\Users\gidan\AppData\Local\apktool\framework\1.apk, --manifest, C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\AndroidManifest.xml, C:\APK Easy Tool\1-Decompiled APKs\NetSpeed.Indicator.v1.7.16\build\resources.zip]
Compile failed. Please read the log

Click here for more infomation about Apktool issues
https://xdaforums.com/t/tool-windows-apk-easy-tool-v1-58-3-dec-2020.3333960/#post-65775601
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The app settings are as follows:

View attachment 5435983

View attachment 5435985

Thank you for your attention! :)