“The pitcher is not properly assembled.
Make sure the pitcher lid is assembled properly, aligning the arrow on the lid with the arrow on the handle. Press down firmly on the handle until you hear a slight click to ensure it is fully engaged. The Nutri Ninja® | Ninja® Blender System will not run if the lid is not assembled correctly and the handle is not fully engaged.
For troubleshooting and assembly tips at any time, refer to the Instruction Booklet which can be found in the packaging of your unit. ”