Rear camera issue xperia xz

[Amit017]

Xperia xz rear camera not starting,although front camera starts.even the flash light is not working.everytime gets msg to restart device but it does not helps.

[Uliwooly]

@Amit017 

Restart the phone and then test it, if it doesn't pass the test repair it with Xperia Companion

Settings > About phone > Diagnostics > Test

Oreo

Settings > Support > Tests