Here is a helpful video if you want to attempt flooding out the knife at home to see if the knife will get running again.
CLEANING YOUTUBE VIDEO SHORT:
TO PREVENT RUST
With all steels, rust is a concern. Despite boasting improved edge retention, higher-grade steel is more susceptible to rust. To prevent rust from showing up on your blade, be sure to keep it oiled and free of debris. Rust can also appear from the smallest things like carrying it in your pocket. If the weather is hot enough, even your sweat can be enough moisture to form rust. Also, any time you use your knife to slice food, make sure to wipe the blade off before retracting or closing.