Import/Export concerts not working (Reflection)

[nahularenas]

Reflection is not working so no methods are found. Also, unit tests for this feature are failing right now

PreConditions: Log in as an administrator

Numbered Steps to reproduce: Open "Administración" dropdown Open "Importar/exportar conciertos"

Issue/ Actual Result: There are no methods in the "Métodos" dropdown

Expected Result: There are methods displayed in the "Métodos" dropdown