It seems that the database was not properly populated when installing the application.
ActiveRecord::StatementInvalid (Mysql2::Error: Table 'bitnami_redmine.settings' doesn't exist: SHOW FULL FIELDS FROM `settings`):
Could you please try uninstalling and installing the application again? If you get the same error message, could you please share with us the bitrock_installer_XXX.log file that you will find inside the %TEMP% directory of your machine? It includes the information of the installation.