Can't Add Version 2.1.1&2.1.2

[amir14a]

AGPBI: {"kind":"error","text":"error: attribute \u0027com.xxx.yyy:tint\u0027 not found.","sources":[{"file":"C:\Users\AMIR ABBAS\.gradle\caches\transforms-1\files-1.1\sundatepicker-2.1.1.aar\e822ce08bc48aaf48be120c7e795a682\res\layout\fragment_month.xml","position":{"startLine":10}}],"original":"","tool":"AAPT"} AGPBI: {"kind":"error","text":"error: attribute \u0027com.xxx.yyy:tint\u0027 not found.","sources":[{"file":"C:\Users\AMIR ABBAS\.gradle\caches\transforms-1\files-1.1\sundatepicker-2.1.1.aar\e822ce08bc48aaf48be120c7e795a682\res\layout\fragment_month.xml","position":{"startLine":38}}],"original":"","tool":"AAPT"}