Unable to Compile

[enwokoma]

Hello,
This project doesn't compile. I tried working on it but whenever I compile it on Android Studio, the build always fails.
I get these errors:

Android resource linking failed
C:\home\jitpack\build\commons\src\main\res\layout\md_preference_custom.xml:14: AAPT: warn: generated id 'android:id/icon' for external package 'android'.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:255:5-4197: AAPT: error: resource attr/flow_horizontalSeparator (aka com.ldt.musicr:attr/flow_horizontalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:255:5-4197: AAPT: error: resource attr/flow_verticalSeparator (aka com.ldt.musicr:attr/flow_verticalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:256:5-3398: AAPT: error: resource attr/flow_horizontalSeparator (aka com.ldt.musicr:attr/flow_horizontalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:256:5-3398: AAPT: error: resource attr/flow_verticalSeparator (aka com.ldt.musicr:attr/flow_verticalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:258:5-4232: AAPT: error: resource attr/flow_horizontalSeparator (aka com.ldt.musicr:attr/flow_horizontalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:258:5-4232: AAPT: error: resource attr/flow_verticalSeparator (aka com.ldt.musicr:attr/flow_verticalSeparator) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:258:5-4232: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:261:5-588: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:262:5-652: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:271:5-277:511: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:278:5-653: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:278:5-653: AAPT: error: resource attr/waveDecay (aka com.ldt.musicr:attr/waveDecay) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:282:5-232: AAPT: error: resource attr/motionPathRotate (aka com.ldt.musicr:attr/motionPathRotate) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:284:5-289:36: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:306:5-232: AAPT: error: resource attr/motionProgress (aka com.ldt.musicr:attr/motionProgress) not found.
    
C:\Users\Gigabyte\.gradle\caches\transforms-2\files-2.1\77f9d4a40f622a063b27042531e01746\constraintlayout-2.0.0-beta1\res\values\values.xml:310:5-323:98: AAPT: error: resource attr/duration (aka com.ldt.musicr:attr/duration) not found.