I had the same situation. In my case working solution:

$common = ripcord::client("$url/xmlrpc/2/common");
$version = $common->version();
$uid = $common->authenticate($db, $username, $password, $version);

Please confirm, if this solution works to you.

Thank you.

This will trigger PHP Parse error error: $uid = $common->authenticate($db, $username, $password, {});

I tried: $uid = $common->authenticate($db, $username, $password, "{}"); but it triggers similar error:

array(2) { ["faultCode"]=> int(1) ["faultString"]=> string(761) "Traceback (most recent call last): File "/home/odoo/src/odoo/14.0/odoo/addons/base/controllers/rpc.py", line 69, in xmlrpc_2 response = self._xmlrpc(service) File "/home/odoo/src/odoo/14.0/odoo/addons/base/controllers/rpc.py", line 49, in _xmlrpc result = dispatch_rpc(service, method, params) File "/home/odoo/src/odoo/14.0/odoo/http.py", line 140, in dispatch_rpc result = dispatch(method, params) File "/home/odoo/src/odoo/14.0/odoo/service/common.py", line 56, in dispatch return g[exp_method_name](*params) File "/home/odoo/src/odoo/14.0/odoo/service/common.py", line 27, in exp_authenticate return res_users.authenticate(db, login, password, {**user_agent_env, 'interactive': False}) TypeError: 'str' object is not a mapping " }
Any other thoughts?

I tried: $uid = $common->authenticate($db, $username, $password, "{}"); but it triggers similar error:

With the quote around the "{}", you give a string instead of a dict.

Actually, python needs a dict to be present (the {}) and it can be empty.

A JSON string will not work.

That part of the code did change recently, making it impossible to give an empty array.

The workaround is to give a named array like this:

array("a"=>"b")

A pull request is in progress to allow an empty array parameter as before.

I am resolved the problem passing in to last parameter the value returned in the method Version. I am programming at C# y the code is this: