The 404 error is occurring on the page https://ww.maevebaksa.com/Shibboleth.sso/Login, which is not a page generated by WeBWorK.
It looks like you have enabled Shibboleth authentication on your WeBWorK instance, but it is pointed to a nonexistent Shibboleth service. If you disable shibboleth authentication in WeBWorK you should be able to access course administration with local usernames and passwords. If you want to use Shibboleth you will have to configure it for this server. I have no experience with Shibboleth, so if you need help with that we will have to hope that someone else knows their way around Shibboleth in WeBWorK.
It looks like you have enabled Shibboleth authentication on your WeBWorK instance, but it is pointed to a nonexistent Shibboleth service. If you disable shibboleth authentication in WeBWorK you should be able to access course administration with local usernames and passwords. If you want to use Shibboleth you will have to configure it for this server. I have no experience with Shibboleth, so if you need help with that we will have to hope that someone else knows their way around Shibboleth in WeBWorK.