Q: about decompile apk & Recompile apk

[Utshiha]

i have tried so many way to Decompile APK
and it succeed , and after when i done my work , its time for Recompile

but the problem is when , i try to Recompile the APK
it gives me error log

not only with 1 app , i try with 1000000 apk
every time gives me same error .

the big problem is even i dont change anything in the apk , still gives me error when i try to Recompile it .......

does any one know why ??