SAML Auth login issue on local - undefined logger()

(1/1) FatalThrowableError
Call to undefined function App\Http\Controllers\logger()

in SamlController.php line 85
at SamlController->acs()
at call_user_func_array(array(object(SamlController), 'acs'), array())
in BoundMethod.php line 29

Enable the Saml debugger by adding the `SAML2_DEBUG=true` on .env.

Then, found the following error:
openssl_x509_read(): supplied parameter cannot be coerced into an X509 certificate!
Whoops, looks like something went wrong.
(1/1) FatalThrowableError
Call to undefined function App\Http\Controllers\logger()

in SamlController.php line 87
at SamlController->acs()
at call_user_func_array(array(object(SamlController), 'acs'), array())
in BoundMethod.php line 29
at BoundMethod::Illuminate\Container\{closure}()
in BoundMethod.php line 87

Resolved the issue after updating with the correct `SAML2_IDP_X509CERT` value.