Cross-Site Scripting Warning in app/views/doorkeeper/authorizations/error.html.haml

[Security issue from Hakiri](https://hakiri.io/projects/788e60099de2b7/stacks/f19759f5425ac7/builds/d192dc64e07995/warnings/348e50b3030d4a): Unescaped model attribute in app/views/doorkeeper/authorizations/error.html.haml