Random strings of letters appears when installing norton password manager

An odd string of letters appears when I attempt to install Norton Password Manager in Chrome. Is this normal? It seems odd.
It’s the string of letters after manager/ Any input would be appreciated

https://chromewebstore.google.com/detail/norton-password-manager/admmjipmmciaobhojoghlmleefbicajg?version=6.6.2-420