diff --git a/transportmanager/server/utils/welcome_email.py b/transportmanager/server/utils/welcome_email.py
index 5b2d913..9b7f0fb 100644
--- a/transportmanager/server/utils/welcome_email.py
+++ b/transportmanager/server/utils/welcome_email.py
@@ -53,8 +53,9 @@ class WelcomeMessage:
             )
         else:
             logging.warning(
-                "Welcome manual missing, skipping attachment. Looked at: %s "
-                "(set SERVER_ASSETS_DIR or WELCOME_MANUAL_FILENAME to adjust)", self.manual
+                f"Welcome manual missing, skipping attachment. Looked at: {self.manual} "
+                f"(set SERVER_ASSETS_DIR or WELCOME_MANUAL_FILENAME to adjust). "
+                f"Current working directory: {os.getcwd()}"
             )
             # If you later implement send_gmail() without attachment, call it here.
             # from utils.email import send_gmail