The address module was installed using Ludwig.
I have tried to update the module but I cannot as the site gives me this error and the site install has not been done via composer.
Everything was working fine until an unrelated module was installed.
Full error message:
Fatal error: Class 'CommerceGuysAddressingAddressFormatAddressFormatRepository' not found in modulescontribaddresssrcRepositoryAddressFormatRepository.php on line 16
Been stuck on this for some time and would appreciate any advice. Most information out there involves using composer to resolve the issue, unfortunately the site is not using composer and the address module was installed using Ludwig.