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I used Picasso as dependency for both the my App project and the chat library

Here is the error I'm facing while compiling the code:

Program type already present: org.apache.http.auth.AuthSchemeFactory Message{kind=ERROR, text=Program type already present:

org.apache.http.auth.AuthSchemeFactory, sources=[Unknown source file], tool name=Optional.of(D8)}

so how to use same dependency for two project?

---- Root project----  
                    ---app
                    ---chat library
EDIT Saturday - 2018 14 April
in app>libs folder the following jar files exist:
httpclient-4.3.6
httpcore-4.3.3
httpmime-4.3.6
I had have the same issue. As the first you can see that a new dexer called D8 is running. It seems to be still experimental so you can switch it off temporally in gradle.properties file by:
android.enableD8=false
See more details about D8 in a blog announcement
Then you can see more detailed error message which led me to following solution:
implementation("org.apache.oltu.oauth2:org.apache.oltu.oauth2.client:1.0.1") {
    exclude group: 'org.apache.oltu.oauth2', module: org.apache.oltu.oauth2.common'
                The option 'android.enableD8' is deprecated and should not be used anymore. Use 'android.enableD8=true' to remove this warning. It will be removed in AGP version 3.3.
– MeLean
                Sep 11, 2018 at 13:48
        
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