Encontraba algunos problemas puntuales entre los dos módulos y Rico me ha contestado el texto siguiente:
looked up your list of custom modules installed and found out, that the vesta_classic_look_and_feel causes the issues. Especially the option "Display nicknames before surnames", which is the cause of the error. After disabling it the chart renders perfectly.
Encontraba algunos problemas puntuales entre los dos módulos y Rico me ha contestado el texto siguiente:
looked up your list of custom modules installed and found out, that the vesta_classic_look_and_feel causes the issues. Especially the option "Display nicknames before surnames", which is the cause of the error. After disabling it the chart renders perfectly.