Odoo Style compilation error

[romeliamaristany]

Hi, On my Odoo 17 website, from Website -> Editor, I changed the theme to one called theme_scita, which is in Odoo Applications. But now I get this error:

A CSS error occurred when using an old style to display this page. Style Error: Style compilation error; see error below. This is an administrator or developer error that needs to be corrected across the entire database before continuing to work.

I've used this theme on other websites and it hasn't given me this error, but it has in this database. If I change the theme to the default Odoo theme, the error disappears. But how can I fix it so I can use theme_scita?