fix: Minor bugfix

src/application/services/books.rs

@@ -70,7 +70,10 @@ impl Books {
     pub fn add_books_from_path(&mut self) {
         let books = fs::Loader::new(PathBuf::from(&self.root))
             .into_iter()
-            .map(|mut book| {book.source =  book.source.strip_prefix(&self.root).unwrap().into(); book})
+            .map(|mut book| {match book.source.strip_prefix(&self.root) {
+                Ok(path) => book.source = path.to_path_buf(),
+                Err(err) => eprintln!("strip source prefix: {}", err)
+            }; book})
             .collect();
 
         match self.repo.lock() {