feat: print error log

src/main.rs

@@ -114,7 +114,9 @@ async fn main() -> tide::Result<()> {
         });
 
         information!("Write email to account config: {:?}", account_email);
-        fs::write(account_email, email);
+        if let Err(e) = fs::write(&account_email, email) {
+            warning!("Write email to account config: {:?}, failed: {}", account_email, e);
+        }
 
         email.to_string()
     };