App Crashes when try to use either showDialog() or showBottomSheet() methods.

[haps87]

Fatal Exception: java.lang.NoSuchFieldError
No static field country_flag of type I in class Lcom/mukesh/countrypicker/R$id; or its superclasses (declaration of 'com.mukesh.countrypicker.R$id' appears in /data/app/~~LBxrtR-zJZNjlGwTOmALag==/com.xyz-q5WhD_2SqWYbQIjrO3uc2g==/base.apk)

com.mukesh.countrypicker.CountriesAdapter$ViewHolder.<init> (CountriesAdapter.java:75)
com.mukesh.countrypicker.CountriesAdapter.onCreateViewHolder (CountriesAdapter.java:43)
com.mukesh.countrypicker.CountriesAdapter.onCreateViewHolder (CountriesAdapter.java:18)
androidx.recyclerview.widget.RecyclerView$Adapter.createViewHolder (RecyclerView.java:7078)

I had used the below version of the library.
implementation 'com.github.mukeshsolanki:country-picker-android:2.0.4'

Here is my applied code.

// Global variable
private CountryPicker countryPicker;

// OnViewCreated
countryPicker = new CountryPicker
                .Builder()
                .with(getContext())
                .listener(country -> {
                    countryCode = country.getDialCode();
                    imgCountry.setImageResource(country.getFlag());
                    Log.e("cSelection-Select", "" + countryCode + " / flag=" + country.getCode());
                })
                .build();

 // On Image Click where app crashes.
 countryPicker.showBottomSheet(activity);

[haps87]

And the funny part is within OnViewCreated method, the below code works.

final Country userCountryInfo = countryPicker.getCountryFromSIM();
countryCode = userCountryInfo.getDialCode();
imgCountry.setImageResource(userCountryInfo.getFlag());
if (BuildConfig.DEBUG)
    Log.e("cSelection-Create", "" + countryCode + " / flag=" + userCountryInfo.getFlag());

[BharathKmalviya]

And the funny part is within OnViewCreated method, the below code works.

final Country userCountryInfo = countryPicker.getCountryFromSIM();
countryCode = userCountryInfo.getDialCode();
imgCountry.setImageResource(userCountryInfo.getFlag());
if (BuildConfig.DEBUG)
    Log.e("cSelection-Create", "" + countryCode + " / flag=" + userCountryInfo.getFlag());

I'm using this in activity and it's crashing!!

any update or solution for this?