diff --git a/naas_python/domains/space/adaptors/primary/TyperSpaceAdaptor.py b/naas_python/domains/space/adaptors/primary/TyperSpaceAdaptor.py
index 4f13dbe..2b087d4 100644
--- a/naas_python/domains/space/adaptors/primary/TyperSpaceAdaptor.py
+++ b/naas_python/domains/space/adaptors/primary/TyperSpaceAdaptor.py
@@ -90,7 +90,7 @@ def create(
         image: str = typer.Option(..., "--image", help="Image of the space"),
         domain: str = typer.Option("", "--domain", "-d", help="Domain of the space"),
         env: str = typer.Option(
-            None,
+            {},
             "--env",
             help="Environment variables for the Space container",
         ),
@@ -258,6 +258,7 @@ def list(
         space_list = self.domain.list(page_size=page_size, page_number=page_number)
 
         data = []
+        headers = []
 
         # Extract the data and headers
         for space in space_list.spaces:
@@ -271,7 +272,7 @@ def list(
 
             data.append(list(_space_dict.values()))  # Append a list of values to data
 
-        headers = [key.upper() for key in _space_dict.keys()]
+            headers = [key.upper() for key in _space_dict.keys()]
 
         if len(data) == 0:
             print("No matching results found.")