Improve error checking in listing users

core/cli.py

@@ -41,7 +41,7 @@ def run_cmd(command: list[str]):
     Runs a command and returns the output.
     Could raise subprocess.CalledProcessError
     '''
-    if DEBUG and Command.GET_USER.value not in command:
+    if DEBUG and Command.GET_USER.value not in command and Command.LIST_USERS.value not in command:
         print(' '.join(command))
     result = subprocess.check_output(command, shell=False)
     if DEBUG:

menu.sh

@@ -143,7 +143,11 @@ hysteria2_get_user_handler() {
 }
 
 hysteria2_list_users_handler() {
-    users_json=$(python3 $CLI_PATH list-users)
+    users_json=$(python3 $CLI_PATH list-users 2>/dev/null)
+    if [ $? -ne 0 ] || [ -z "$users_json" ]; then
+        echo -e "\033[0;31mError:\033[0m Failed to list users."
+        return 1
+    fi
     users_array=($(echo "$users_json" | jq -r '.[] | .username'))
 
     if [[ ${#users_array[@]} -eq 0 ]]; then