creating a new project in android studio 3.0 taking too long, and error in creating

Question

I am a beginner in the field of android studio. Creating a new project takes a lot of time - 15 minuted. I tried to enable the "offline work" option , but after I did it - it is still too slow.

And in addition , when I creat a new project, I get the following error:

Error:Execution failed for task ':app:preDebugAndroidTestBuild'.
> Conflict with dependency 'com.android.support:support-annotations' in project ':app'. Resolved versions for app (26.1.0) and test app (27.1.1) differ. See https://d.android.com/r/tools/test-apk-dependency-conflicts.html for details.

Answer 1

First of Upgrade your PC configuration.

And to avoid the error download the SDK file properly.