[Android Themes] lucky_sidhu:
The error was

I: Using Apktool 2.1.0-a64a03-SNAPSHOT on SystemUI.apk
I: Loading resource table...
I: Decoding AndroidManifest.xml with resources...
I: Loading resource table from file: C:\Users\Sidhu\apktool\framework\1.apk
I: Regular manifest package...
I: Decoding file-resources...
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010807b0
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010807b6
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080b50
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807b1
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010807b6
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010807b6
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010807b6
W: Could not decode attr value, using undecoded value instead: ns=android, name=drawable, value=0x010808de
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x0108079a
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807aa
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a1
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a2
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a3
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a4
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807a5
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x010807aa
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080792
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080793
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080794
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080795
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080796
W: Could not decode attr value, using undecoded value instead: ns=android, name=src, value=0x01080797
I: Decoding values */* XMLs...
Exception in thread "main" brut.androlib.err.UndefinedResObject: resource spec: 0x010a0098
at brut.androlib.res.data.ResPackage.getResSpec(ResPackage.java:59)
at brut.androlib.res.data.ResTable.getResSpec(ResTable.java:65)
at brut.androlib.res.data.ResTable.getResSpec(ResTable.java:61)
at brut.androlib.res.data.value.ResReferenceValue.getReferent(ResReferenceValue.java:57)
at brut.androlib.res.data.value.ResReferenceValue.encodeAsResXml(ResReferenceValue.java:47)
at brut.androlib.res.data.value.ResScalarValue.encodeAsResXmlValue(ResScalarValue.java:58)
at brut.androlib.res.data.value.ResStyleValue.serializeToResValuesXml(ResStyleValue.java:72)
at brut.androlib.res.AndrolibResources.generateValuesFile(AndrolibResources.java:502)
at brut.androlib.res.AndrolibResources.decode(AndrolibResources.java:252)
at brut.androlib.Androlib.decodeResourcesFull(Androlib.java:137)
at brut.androlib.ApkDecoder.decode(ApkDecoder.java:102)
at brut.apktool.Main.cmdDecode(Main.java:165)
at brut.apktool.Main.main(Main.java:81)

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Decompile Not Successful!

I fixed it. Actually I forgot to install framework-res.apk in the user/apktool folder.

Thanks for your support.