Add generic error catchers

src/main.rs

@@ -128,6 +128,10 @@ fn main() {
             routes::well_known::nodeinfo,
             routes::well_known::webfinger
         ])
+        .catch(catchers![
+            routes::errors::not_found,
+            routes::errors::server_error
+        ])
         .manage(init_pool())
         .attach(Template::custom(|engines| {
             rocket_i18n::tera(&mut engines.tera);

src/routes/errors.rs

@@ -0,0 +1,15 @@
+use rocket_contrib::Template;
+
+#[catch(404)]
+fn not_found() -> Template {
+    Template::render("errors/404", json!({
+        "error_message": "Page not found"
+    }))
+}
+
+#[catch(500)]
+fn server_error() -> Template {
+    Template::render("errors/500", json!({
+        "error_message": "Server error"
+    }))
+}

src/routes/mod.rs

@@ -3,6 +3,7 @@ use std::path::{Path, PathBuf};
 
 pub mod blogs;
 pub mod comments;
+pub mod errors;
 pub mod instance;
 pub mod likes;
 pub mod notifications;