The Wallee Payment SDK 1.4.5 uses the Wallee Twint SDK Version 1.2.6 as a dependency. That SDK contains two wrongly obfuscated classes (a.a and a.b) which causes clashes with other libraries that may include a dependency on the Twint SDK (or other libraries that wrongly obfuscate their classes).
You can see those classes when inspecting the AAR file:

The issue we're seeing is when we include another dependency (we're also working with them to get the issue fixed on their end), that contains the same classes. The Gradle build then fails with the following error message:
Duplicate class a.a found in modules other-library-1.0.0.aar -> other-library-1.0.0-runtime (com.other:library:1.0.0) and twint-sdk-1.2.6.aar -> twint-sdk-1.2.6-runtime (com.wallee.resources:twint-sdk:1.2.6)
Duplicate class a.b found in modules other-library-1.0.0.aar -> other-library-1.0.0-runtime (com.other:library:1.0.0) and twint-sdk-1.2.6.aar -> twint-sdk-1.2.6-runtime (com.wallee.resources:twint-sdk:1.2.6)
The same issue was discovered and fixed by Twint in the Adyen Android SDK here: Adyen/adyen-android#1767
I would assume using a newer version of the Twint SDK would automatically fix this issue for you as well.
The Wallee Payment SDK 1.4.5 uses the Wallee Twint SDK Version 1.2.6 as a dependency. That SDK contains two wrongly obfuscated classes (

a.aanda.b) which causes clashes with other libraries that may include a dependency on the Twint SDK (or other libraries that wrongly obfuscate their classes).You can see those classes when inspecting the AAR file:
The issue we're seeing is when we include another dependency (we're also working with them to get the issue fixed on their end), that contains the same classes. The Gradle build then fails with the following error message:
The same issue was discovered and fixed by Twint in the Adyen Android SDK here: Adyen/adyen-android#1767
I would assume using a newer version of the Twint SDK would automatically fix this issue for you as well.