No Plot Bunnies:
No plot bunnies (ideas), is when you literally can't come up with anything to write.
It happens to a lot of us. It's not permanent , and this goes away eventually.
How to deal with it?
First , you have to acknowledge what is causing the block.
One of the main reasons for it is stress, or feeling lack of confidence in your writing. All you have to do is take some time to remember that : YOU LIKE WRITING. You're doing this for you , because its something you enjoy. Don't worry about pleasing others . The wording for your story will never be perfect at first . Thats what editing and rewrites are for ( after you get the basic story down).
Take a walk, relax, and remember how fun it is when you let your ideas flow.