Hello,
I need help, on Odoo 15 CE fresh install

When install the basic billing module i have this error if i go Configuration > General settings and click on save button or 
click on whatever i want in General settings.


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/odoo/odoo15/odoo/http.py", line 643, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo/odoo15/odoo/http.py", line 301, in _handle_exception
    raise exception.with_traceback(None) from new_cause
binascii.Error: Incorrect padding
When i uninstall, i no longer have the error.
Thank you,