minecraft launcher nothing to download 1.11.1 1.11.2 1.12.2

12:08:43 launcher Checking installations.

12:08:43 launcher Minecraft client 1.11.2 is ready to start.

12:08:43 launcher Starting!

12:08:43 launcher Nothing to download!

12:08:43 launcher Extracting 2 files!

12:08:44 launcher Using default game log configuration client-1.7.xml (outputs XML)

12:08:44 launcher Installing versions

then it cannot open the minecraft

it makes me very angry

please give me a solution