diff --git a/admin_frontend/src/config.rs b/admin_frontend/src/config.rs
index f9326e82..a6aa2a80 100644
--- a/admin_frontend/src/config.rs
+++ b/admin_frontend/src/config.rs
@@ -10,10 +10,12 @@ pub struct Config {
 }
 
 impl Config {
-  pub fn from_env() ->  Result<Config, anyhow::Error> {
+  pub fn from_env() -> Result<Config, anyhow::Error> {
     let cfg = Config {
       host: get_or_default("ADMIN_FRONTEND_HOST", "0.0.0.0"),
-      port: get_or_default("ADMIN_FRONTEND_PORT", "3000").parse()?,
+      port: get_or_default("ADMIN_FRONTEND_PORT", "3000")
+        .parse()
+        .map_err(|e| anyhow::anyhow!("failed to parse ADMIN_FRONTEND_PORT as u16, err: {}", e))?,
       redis_url: get_or_default("ADMIN_FRONTEND_REDIS_URL", "redis://localhost:6379"),
       gotrue_url: get_or_default("ADMIN_FRONTEND_GOTRUE_URL", "http://localhost:9999"),
       appflowy_cloud_url: get_or_default(