how to change app name and package name of an apk?

i decompiled an apk and i made couple modification when i tried to recompile it i got that error :

Compiling APK file...

/c "java -Xmx1024m -jar "C:Program Files (x86)APK Easy ToolApktoolapktool_2.4.1.jar" b -f -o "C:UsersasusDocumentsAPK Easy Tool2-Recompiled APKsb83ba6fc.apk" "C:UsersasusDocumentsAPK Easy Tool1-Decompiled APKs{b83ba6fc-4bdd-4c0b-badb-d3d46d6248ea}" "

I: Using Apktool 2.4.1
I: Smaling smali folder into classes.dex...
I: Smaling smali_assets folder into assets.dex...
......UsersasusDocumentsAPK Easy Tool1-Decompiled APKs{b83ba6fc-4bdd-4c0b-badb-d3d46d6248ea}smali_assetscomfacebookadsinternalandroidxsupportv4viewAbsSavedState$1.smali[13,11] Class Lcom/facebook/ads/internal/androidx/support/v4/view/AbsSavedState$1; has already been interned
Could not smali file: com/facebook/ads/internal/androidx/support/v4/view/AbsSavedState$1.smali



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this is the apk easy tool log output.

after make those changes :

• i changed the app name
• i changed the package name