TypeError: Symfony

Problem/Motivation

PHP error on visiting /admin/config/people/accounts

TypeError: Symfony\Component\HttpFoundation\InputBag::get(): Argument #1 ($key) must be of type string, null given, called in /code/web/core/lib/Drupal/Core/Routing/RouteMatch.php on line 127 in Symfony\Component\HttpFoundation\InputBag->get() (line 28 of /code/vendor/symfony/http-foundation/InputBag.php). | uid: 1 | request-uri: http://localhost/admin/config/people/accounts | refer: http://localhost/admin/people/uoa/ua-auth/login-page | ip:  172.21.0.1 | link: 
web_1        | [09-Aug-2023 18:01:53 Australia/Adelaide] Uncaught PHP Exception TypeError: "Symfony\Component\HttpFoundation\InputBag::get(): Argument #1 ($key) must be of type string, null given, called in /code/web/core/lib/Drupal/Core/Routing/RouteMatch.php on line 127" at /code/vendor/symfony/http-foundation/InputBag.php line 28
web_1        | Wed Aug  9 18:01:53 2023 (273): [Error] APM: Locking APM for 300 seconds for reason: Cannot connect to the agent
web_1        | 172.21.0.1 - - [09/Aug/2023:18:01:53 +0930] "GET /admin/config/people/accounts 

Steps to reproduce

login with a privileged user
visit /admin/config/people/accounts

Proposed resolution

patch or merge request provided.

Remaining tasks

No

User interface changes

No

API changes

No

Data model changes

No