GitLab now enforces expiry dates on tokens that originally had no set expiration date. Those tokens were given an expiration date of one year later. Please review your personal access tokens, project access tokens, and group access tokens to ensure you are aware of upcoming expirations. Administrators of GitLab can find more information on how to identify and mitigate interruption in our documentation.
Due to !176 (merged) an assertion was introduced in the creation of the symbolic relaxation matrix. The assertion tests that all entries of the symbolic relaxation matrix are sympy symbols. However, when a relaxation_rates_modifier this might not be the case.
This MR fixes the problem and introduces a test case with the psm method
