Hello, I have a problem with the integration of authentication with saml. After doing the configuration following the documentation through the database, the MY SSO

authentication button does not appear. I have an Open project on premises version 12.5.5

The configuration seems active through the console

irb(main):001:0> Setting.plugin_openproject_auth_saml
=>
{"providers"=>
 {"saml"=>
   {"name"=>"saml",
    "display_name"=>"My SSO",
    "assertion_consumer_service_url"=>"https://openproject.granollers.cat/auth/saml/callback",
    "issuer"=>"https://openproject.granollers.cat",
    "idp_cert"=>
     "-----BEGIN CERTIFICATE-----\n *** MY CERTFICATE ***\n-----END CERTIFICATE-----\n",
    "true"=>"https://login.granollers.cat/nidp/saml2/sso",
    "idp_slo_target_url"=>"https://login.granollers.cat/nidp/saml2/slo",
    "attribute_statements"=>{"email"=>["mail"], "login"=>["uid"], "first_name"=>["givenName"], "last_name"=>["sn"]}}}}

Can somebody help me ? any ideas? thank you