``` TypeError: localStorage is null storage1.36.0.js:1:1164 getCurrentValue file:///home/juergen/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/share/doc/rust/html/storage1.36.0.js:1 <anonymous> file:///home/juergen/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/share/doc/rust/html/storage1.36.0.js:1 ```