java.lang.NoSuchFieldError: No static field MD_Dark of type I in class Lcom/github/javiersantos/materialstyleddialogs/R$styl

[mengtrue]

• [√] I have verified there are no duplicate active or recent bugs, questions, or requests.
• [√] I have verified that I am using the latest version of MaterialStyledDialogs.
• [√] I have given my issue a non-generic title.
• [√] I have read over the README and Wiki (before asking questions on how to do something).

Details

• MaterialStyledDialogs version: 2.1
• Device OS version: 8.0
• Device Manufacturer: OnePlus
• Device Name: OnePlus A3000

Reproduction Steps

1.add this library in my app project
2.add code for MaterialStyledDialog
3.show the dialog

Expected Result

APP crash
the log is
07-25 10:28:06.238 E 16352 16352 AndroidRuntime: java.lang.NoSuchFieldError: No static field MD_Dark of type I in class Lcom/github/javiersantos/materialstyleddialogs/R$style; or its superclasses (declaration of com.github.javiersantos.materialstyleddialogs.R$style appears in /data/app/com.gtk.smartmanagement-WV22AVku43YBXFAZ3rCTbQ==/split_lib_slice_2_apk.apk)
07-25 10:28:06.238 E 16352 16352 AndroidRuntime: at com.github.javiersantos.materialstyleddialogs.MaterialStyledDialog.(MaterialStyledDialog.java:37)
07-25 10:28:06.238 E 16352 16352 AndroidRuntime: at com.github.javiersantos.materialstyleddialogs.MaterialStyledDialog$Builder.build(MaterialStyledDialog.java:457)
07-25 10:28:06.238 E 16352 16352 AndroidRuntime: at com.github.javiersantos.materialstyleddialogs.MaterialStyledDialog$Builder.show(MaterialStyledDialog.java:462)

Actual Result

The dialog shoule be showed normal.

[mengtrue]

After check source code, add
implementation 'com.afollestad.material-dialogs:core:0.9.6.0'
it can work.
Maybe you can add this on README