Good day to y'all.

I am currently facing a problem that I quite don't know how to solve. I've installed additional plugin to connect my store to Shopify (from Teqstars company). When I try to enter the users menagament system to grant additional access the following error occurs:

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/http.py", line 643, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/odoo/src/odoo/odoo/http.py", line 301, in _handle_exception
    raise exception.with_traceback(None) from new_cause
ValueError: Invalid field 'apply_method' on model 'res.config.settings'

Full text of this particular error can be found here: https://pastebin.com/L13UxAM2

I would appreciate any help regarding handling this error.
Thank you in advance.