Hi, I'm new to python and odoo. I made a custom dashboard view. But when I drag one of the views inside, this error comes out:

Odoo Server Error
Traceback (most recent call last):
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 624, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "C:\Users\Administrator\odoo-13.0\odoo\tools\pycompat.py", line 14, in reraise
    raise value
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 669, in dispatch
    result = self._call_function(**self.params)
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 350, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "C:\Users\Administrator\odoo-13.0\odoo\service\model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 339, in checked_call
    result = self.endpoint(*a, **kw)
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 915, in __call__
    return self.method(*args, **kw)
  File "C:\Users\Administrator\odoo-13.0\odoo\http.py", line 515, in response_wrap
    response = f(*args, **kw)
TypeError: edit_custom() missing 1 required positional argument: 'custom_id'

The process of making a custom dashboard is from a youtube tutorial. The tutorial experienced the same issue and provided a solution, which is to change the js code in the dashboard module in odoo.

//before
_saveDashboard: function () {
        var board = this.renderer.getBoard();
        var arch = QWeb.render('DashBoard.xml', _.extend({}, board));
        return this._rpc({
                route: '/web/view/edit_custom',
                params: {
                    custom_id: this.customViewID,
                    arch: arch,
                }
            }).then(dataManager.invalidate.bind(dataManager));
    },

//after
_saveDashboard: function () {
    var board = this.renderer.getBoard();
    var arch = QWeb.render('DashBoard.xml', _.extend({}, board));
    return this._rpc({
            route: '/web/view/edit_custom',
            params: {
                custom_id: this.customViewID !=null? this.customViewID: '',
                arch: arch,
            }
        }).then(dataManager.invalidate.bind(dataManager));
},

In the tutorial, it works. But what I desperately need is to write a js file to override this _saveDashboard method inside "/addons/board/static/src/js/board_view.js". I tried to google relevant issues on forums but still cannot find a solution or explanation of this. I tried to learn js to understand the issue but still not helpful.

Can anyone show me how to override this method in my custom module?