Freepbx17 provisioning Xml phone cisco cp78xx and cp88xx white screen

FreePBX Endpoints
1

Hello good afternoon, I have a problem with the XML files when you go from version 16 to 17, it is the same as PBX16 but in 17 the phone screen stays blank, I have also tried to comfigure an external Apache server but also a white screen you can help me.

español:
Hola buenas tardes , tengo un problema con los archivos xml al pasar de la version 16 a 17 , esta igual configurado que pbx16 pero en 17 la pantalla del telefono se queda en blanco , he probado tambien a comfigurar un servidor apache tomcat externo pero tambien pantalla blanca me podeis ayudar.

2

Hello good afternoon, I have seen that every time I press the agenda button contacts I have this error in the record var/log/syslog: [Warning] Access denied for user ''@'localhost' (using password: NO)
I didn’t know that the phone connected to Mariadb to consult an XML File
What can I do?