Hello guys,
I met a difficulty to run webmanager on the Rpi 3
Here is below the log of the run, did I missed something ?

/usr/share/indi/indi_asi.xml
/usr/share/indi/indi_maxdomeii.xml
/usr/share/indi/indi_qhy.xml
/usr/share/indi/indi_gphoto.xml
/usr/share/indi/indi_sbig.xml
/usr/share/indi/indi_fli.xml
/usr/share/indi/indi_ffmv.xml
/usr/share/indi/indi_sx.xml
/usr/share/indi/indi_piface_relay.xml
/usr/share/indi/indi_duino.xml
/usr/share/indi/indi_gpsd.xml
/usr/share/indi/indi_piface_focuser.xml
/usr/share/indi/indi_aagcloudwatcher.xml
/usr/share/indi/indi_qsi.xml
/usr/share/indi/indi_atik.xml
/usr/share/indi/indi_eqmod.xml
/usr/share/indi/drivers.xml
/usr/share/indi/indi_apogee.xml
/usr/share/indi/indi_fishcamp.xml
/usr/share/indi/indi_dsi.xml
/usr/share/indi/indi_miccd.xml
/usr/share/indi/indi_nexstarevo.xml
Parsing XML file: /usr/share/indi/indi_asi.xml
Parsing XML file: /usr/share/indi/indi_maxdomeii.xml
Parsing XML file: /usr/share/indi/indi_qhy.xml
Parsing XML file: /usr/share/indi/indi_gphoto.xml
Parsing XML file: /usr/share/indi/indi_sbig.xml
Parsing XML file: /usr/share/indi/indi_fli.xml
Parsing XML file: /usr/share/indi/indi_ffmv.xml
Parsing XML file: /usr/share/indi/indi_sx.xml
Parsing XML file: /usr/share/indi/indi_piface_relay.xml
Traceback (most recent call last):
File "drivermanager.py", line 5, in <module>
from parsedrivers import driversList, findDriverByLabel, DeviceDriver
File "/home/astroberry/servermanager/parsedrivers.py", line 37, in <module>
family = group.attrib
KeyError: 'group'

Remove the file /usr/share/indi/indi_piface_focuser.xml should make it work, assuming you are not using it.
I also removed /usr/share/indi/indi_piface_relay.xml, as well, and cannot remember which one did it.

I have just updated astroberry-piface driver and updated related xml files. Download and install new version . I would appreciate feedback after you test it. Apparently INDI xml syntax changed in the meantime so I needed to update it.

Installed the DEP, rebooted the RPI3 and indi web server came up okay.