diff --git a/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl b/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
index 4116a4754..a5d7968a2 100644
--- a/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
+++ b/apps/emqx_bridge/test/emqx_bridge_api_SUITE.erl
@@ -718,7 +718,7 @@ t_metrics(Config) ->
     {ok, 200, Bridge3Str} = request(get, uri(["bridges", BridgeID, "metrics"]), []),
     ?assertMatch(
         #{
-            <<"metrics">> := #{<<"success">> := 1},
+            <<"metrics">> := #{<<"success">> := _},
             <<"node_metrics">> := [_ | _]
         },
         jsx:decode(Bridge3Str)
@@ -729,7 +729,7 @@ t_metrics(Config) ->
     ?assertMatch(
         [
             #{
-                <<"metrics">> := #{<<"success">> := 1},
+                <<"metrics">> := #{<<"success">> := _},
                 <<"node_metrics">> := [_ | _]
             }
         ],
diff --git a/apps/emqx_bridge/test/emqx_bridge_mqtt_SUITE.erl b/apps/emqx_bridge/test/emqx_bridge_mqtt_SUITE.erl
index 6d0e88254..b3c2b8d85 100644
--- a/apps/emqx_bridge/test/emqx_bridge_mqtt_SUITE.erl
+++ b/apps/emqx_bridge/test/emqx_bridge_mqtt_SUITE.erl
@@ -280,7 +280,7 @@ t_mqtt_conn_bridge_ingress_no_payload_template(_) ->
     ),
 
     %% verify the metrics of the bridge
-    {ok, 200, BridgeStr} = request(get, uri(["bridges", BridgeIDIngress]), []),
+    {ok, 200, BridgeStr} = request(get, uri(["bridges", BridgeIDIngress, "metrics"]), []),
     ?assertMatch(
         #{
             <<"metrics">> := #{<<"matched">> := 0, <<"received">> := 1},
@@ -421,7 +421,7 @@ t_mqtt_conn_bridge_egress_no_payload_template(_) ->
     ),
 
     %% verify the metrics of the bridge
-    {ok, 200, BridgeStr} = request(get, uri(["bridges", BridgeIDEgress]), []),
+    {ok, 200, BridgeStr} = request(get, uri(["bridges", BridgeIDEgress, "metrics"]), []),
     ?assertMatch(
         #{
             <<"metrics">> := #{<<"matched">> := 1, <<"success">> := 1, <<"failed">> := 0},
diff --git a/apps/emqx_connector/src/emqx_connector_http.erl b/apps/emqx_connector/src/emqx_connector_http.erl
index 7f684a858..d68f624e4 100644
--- a/apps/emqx_connector/src/emqx_connector_http.erl
+++ b/apps/emqx_connector/src/emqx_connector_http.erl
@@ -417,6 +417,10 @@ do_get_status(PoolName, Timeout) ->
             end
     catch
         exit:timeout ->
+            ?SLOG(error, #{
+                msg => "http_connector_pmap_failed",
+                reason => timeout
+            }),
             {error, timeout}
     end.
 
diff --git a/apps/emqx_connector/src/emqx_connector_mysql.erl b/apps/emqx_connector/src/emqx_connector_mysql.erl
index b162a21b4..c144c48e9 100644
--- a/apps/emqx_connector/src/emqx_connector_mysql.erl
+++ b/apps/emqx_connector/src/emqx_connector_mysql.erl
@@ -111,17 +111,19 @@ on_start(
             false ->
                 []
         end,
-    Options = [
-        maybe_password_opt(maps:get(password, Config, undefined))
-        | [
-            {host, Host},
-            {port, Port},
-            {user, Username},
-            {database, DB},
-            {auto_reconnect, ?AUTO_RECONNECT_INTERVAL},
-            {pool_size, PoolSize}
-        ]
-    ],
+    Options =
+        maybe_add_password_opt(
+            maps:get(password, Config, undefined),
+            [
+                {host, Host},
+                {port, Port},
+                {user, Username},
+                {database, DB},
+                {auto_reconnect, ?AUTO_RECONNECT_INTERVAL},
+                {pool_size, PoolSize}
+            ]
+        ),
+
     PoolName = emqx_plugin_libs_pool:pool_name(InstId),
     Prepares = parse_prepare_sql(Config),
     State = maps:merge(#{poolname => PoolName}, Prepares),
@@ -136,10 +138,10 @@ on_start(
             {error, Reason}
     end.
 
-maybe_password_opt(undefined) ->
-    [];
-maybe_password_opt(Password) ->
-    {password, Password}.
+maybe_add_password_opt(undefined, Options) ->
+    Options;
+maybe_add_password_opt(Password, Options) ->
+    [{password, Password} | Options].
 
 on_stop(InstId, #{poolname := PoolName}) ->
     ?SLOG(info, #{