Could not find com.github.CymChad:BaseRecyclerViewAdapterHelper:v2.9.34.

This error message usually means that the dependency "com.github.CymChad:BaseRecyclerViewAdapterHelper:v2.9.34" could not be found in the repository where your project is looking for it.

To solve this issue, you can try the following steps:

1. Make sure that you have added the correct repository where this dependency is located in your project's build.gradle file. For example, if this dependency is hosted on JCenter, add the following line to your build.gradle file:

   repositories {
       jcenter()
   }

2. Check if your internet connection is working properly and try syncing your project with the repositories again.

3. If the above steps do not work, try changing the version of the dependency to a more recent one or to a different one that is available in the repositories. You can search for available versions on a repository website or by using a search engine.

4. If all else fails, you can try manually downloading the dependency and adding it to your project's "libs" folder. However, this is not recommended as it can cause conflicts and make your project harder to maintain.