Implementing password resets

Hi team,
I have (what I think is) a working DPAE setup - it worked with simple passwords and I am now trying to get it to work with DB passwords. When using password reset,
"Password reset
Enter your username to obtain an email to reset your password

Username: ... [Submit]" and clicking 'Submit', I get "A password reset request has been sent. Please check your email."

However, there is no email and I get
"DBD::mysql::db do failed: Unknown column 'pw_reset_code' in 'field list' at /Library/Perl/5.18/Dancer/Plugin/Database/Core/Handle.pm line 310." (to STDERR)
and no further information in Dancer2 logfile or STDERR.

Are there more diagnostics I should be seeing or ...?
I can see pw_reset_code mentioned in the PM but I'm not sure how it translates to a select query in Dancer2::Plugin::Auth::Extensible::Provider::Database (which is how I assume the above error is arising)

Start with Dancer2::Plugin::Auth::Extensible::Provider::Database and the password-reset flow described in the report; reproduce the MySQL error and inspect how pw_reset_code is selected. Check the available diagnostics and database schema, then verify the fix with a reset request that completes without the unknown-column error.