Failed to parse provisioning database file prov_db.json : BlueZ,Meshctl V5.50

Hello ,
I have built and BlueZ 5.50 from the source and installed it on
raspberry PI 3 W0, but when I am trying to launch the meshctl tool -
using ./meshctl (from within or out side the mesh directory) i am
getting the below error  :

Failed to parse provisioning database file prov_db.json

I checked the online sanity onfthe above json file and it seems correct.



I tried doing the sudo hcitool -lescan - it shows the LE devices and also

bluetoothd -v gives 5.50 which shows my compilation and loading of the
new BlueZ is alteast correct.

I have already installed the c-json lib .

Is this a bug in meshctl?

Please assist !


Thanks in Advance !