api/workspaces POST요청시 500에러가 뜹니다.

 const onCreateWorkspace = useCallback(
    (e: any) => {
      e.preventDefault();
      if (!newWorkspace || !newWorkspace.trim()) return; // trim : 앞 뒤 공백제거
      if (!newUrl || !newUrl.trim()) return;
      axios
        .post(
          'http://localhost:3095/api/workspaces',
          {
            Workspace: newWorkspace,
            url: newUrl,
          }, { 
            withCredentials: true 
          },
        )
        .then(() => {
          mutate(userData, true);
          setShowCreateWorkspaceModal(false);
          setNewWorkspace('');
          setNewUrl('');
        })
        .catch((error) => {
          console.dir(error);
          toast.error(error.response?.data, { position: 'bottom-center' });
        });
    },
    [newWorkspace, newUrl],
  );

뭐가 문제인건가요?