STATUS_USER_SESSION_DELETED

[ruikaka16]

const smbClient = new smb2({
      client: {
        dialect: '3.1.1'
      },
      share: '\\\\'+ip+'\\'+String(remotepath).substring(0,1)+'$',
      domain: 'workgroup',
      username: username,
      password:password
    });

    smbClient.readdir((String(remotepath).substring(3)).replace(/\\/g, '\\\\') + "\\\\", function(err, files) {
     if (err) throw err;
      console.log(files.length);
      return files.length
    });

run my code returning the same error:"STATUS_USER_SESSION_DELETED ",i don't know how to fix it,but it run perfectly well before.Thanks for help