The launcher opens and closes when play is clicked

When I open my Minecraft launcher it opens correctly and is fine until I press Play, it then prceeds to load like it should do but then brings me back to the launcher. If I press play again it does the same thing.

What I expected to happen was the Minecraft launcher to load my game so I could play minecraft.

What actually happened was it brought me back to the launcher page and doesn't let me play no matter how many times I press play.

Steps to Reproduce:
1. Open the Minecraft launcher
2. Press the Play button
3. Wait for the page to load, but instead it goes back to the play screen.