Keep getting the same error when compiling with Cargo using Ubuntu

[19noam]

error[E0308]: mismatched types
--> src/main.rs:166:19
|
166 | generate(gen, cmd, cmd.get_name().to_string(), &mut std::io::stdout());
| ^^^ expected struct clap::builder::command::App, found struct clap::Command
|
= note: expected mutable reference &mut clap::builder::command::App<'_>
found mutable reference `&mut clap::Command