Error messages in launch of Jupyterlab in a new environement

Hi,

Recently I generated a new virtual enviroment with conda and installed some packages in the environment. All went through smoothly. However, as I launched Jupyterlab in the new environment, I got the following error messages:

[E 2023-02-26 13:09:11.163 ServerApp] Error unpacking user from cookie: Extra data: line 1 column 3 (char 2)
[I 2023-02-26 13:09:11.164 LabApp] Generating new user for token-authenticated request: 611fbbfe393c41339d73403567c058e4
[E 2023-02-26 13:09:11.164 ServerApp] Error unpacking user from cookie: Extra data: line 1 column 3 (char 2)
[I 2023-02-26 13:09:12.999 LabApp] Build is up to date

Does anyone have any idea about the cause of the problem and how to solve it?

Best regards,
Li-Xin Li