Android Device Monitor doesn't diplay files

Question

By android device monitor I couldn't find any files within my emulator android 7 Nougat.

It's display empty File Explorer tap even after select device.

It's only accessible by terminal by adb shell

$ adb shell
adb server is out of date.  killing...
* daemon started successfully *
generic_x86:/ $ ls
ls: ./ueventd.rc: Permission denied
ls: ./ueventd.ranchu.rc: Permission denied
ls: ./ueventd.goldfish.rc: Permission denied
ls: ./service_contexts: Permission denied
ls: ./sepolicy: Permission denied
ls: ./selinux_version: Permission denied
ls: ./seapp_contexts: Permission denied
ls: ./init.zygote32.rc: Permission denied
ls: ./init.usb.rc: Permission denied
ls: ./init.usb.configfs.rc: Permission denied
ls: ./init.rc: Permission denied
ls: ./init.ranchu.rc: Permission denied
ls: ./init.goldfish.rc: Permission denied
ls: ./init.environ.rc: Permission denied
ls: ./init: Permission denied
ls: ./fstab.ranchu: Permission denied
ls: ./fstab.goldfish: Permission denied
ls: ./file_contexts.bin: Permission denied
ls: ./default.prop: Permission denied
acct  charger d    dev mnt proc              root sdcard  sys    vendor 
cache config  data etc oem property_contexts sbin storage system 

Pleas guide to be accessible by android device monitor.

OS: Ubuntu 16.04

android studio: 2.2.2

Android Device Monitor : 25.2.2

Answer 1

$ adb shell
generic_x86:/ $ su
generic_x86:/ $ ls

i,e switch to root user it works