C:\Users\Prabal\Desktop\rails-club>rails generate devise member
Bundler could not find compatible versions for gem "railties": In snapshot (Gemfile.lock): railties (= 5.1.0)
In Gemfile: railties (~> 5.1.0) x64-mingw32
devise (~> 4.2.1) x64-mingw32 was resolved to 4.2.1, which depends on
railties (< 5.1, >= 4.1.0) x64-mingw32
devise (~> 4.2.1) x64-mingw32 was resolved to 4.2.1, which depends on
responders x64-mingw32 was resolved to 2.3.0, which depends on
railties (< 5.1, >= 4.2.0) x64-mingw32
Running bundle update will rebuild your snapshot from scratch, using only the gems in your Gemfile, which may resolve the conflict.
I am a newbie in ROR please help me how to move on to next step
It looks like you are trying to use devise v4.2.1 gem with rails v5.1.0. It is not possible to do so at this moment as devise v4.2.1 has a runtime dependency of railties = <5.1, >=4.1.0 and rails v5.1.0 has a runtime dependency of railties = 5.1.0. End result is a version conflict which is what you are encountering. I would suggest you to downgrade to rails v5.0.2 in order to be able to use devise on your app. There shouldn't be any version conflicts once you do that.
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