Pycharm with Kivy - Error Unable permissions?

I need some help. I'm studying kivy and I use pycharm as IDE for development. To work with kivy I created a virtualenvs with requeriments:

kivy = 1.10
Cython = 0.23
Python = 3.5

As for setup I did not have too much trouble. It came later when I tried to generate a layout and it did not appear. The log reports that pycharm is not allowed to access the function. Is my log:

/home/user/.virtualenvs/k35/bin/python /home/user/Projetos/Python/kivy/source/tela_layout/main.py
/home/user/Projetos/Python/kivy/source/tela_layout/main.py:18: SyntaxWarning: name 'ed' is assigned to before global declaration
  global ed
[INFO   ] [Logger      ] Record log in /home/victorpenna/.kivy/logs/kivy_17-11-13_11.txt
[INFO   ] [Kivy        ] v1.10.0
[INFO   ] [Python      ] v3.5.2 (default, Sep 14 2017, 22:51:06) 
[GCC 5.4.0 20160609]
[INFO   ] [Factory     ] 194 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_gif (img_pil, img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [OSC         ] using <multiprocessing> for socket
[INFO   ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)
[INFO   ] [GL          ] Using the "OpenGL" graphics system
[INFO   ] [GL          ] Backend used <gl>
[INFO   ] [GL          ] OpenGL version <b'3.0 Mesa 17.3.0-rc2 - padoka PPA'>
[INFO   ] [GL          ] OpenGL vendor <b'Intel Open Source Technology Center'>
[INFO   ] [GL          ] OpenGL renderer <b'Mesa DRI Intel(R) HD Graphics 5500 (Broadwell GT2) '>
[INFO   ] [GL          ] OpenGL parsed version: 3, 0
[INFO   ] [GL          ] Shading version <b'1.30'>
[INFO   ] [GL          ] Texture max size <16384>
[INFO   ] [GL          ] Texture max units <32>
[INFO   ] [Window      ] auto add sdl2 input provider
[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event8
[INFO   ] [MTD         ] Read event from </dev/input/event8>
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event13
[INFO   ] [MTD         ] Read event from </dev/input/event13>
[INFO   ] [ProbeSysfs  ] device match: /dev/input/event14
[INFO   ] [MTD         ] Read event from </dev/input/event14>
[INFO   ] [Base        ] Start application main loop
[WARNING] [MTD         ] Unable to open device "/dev/input/event8". Please ensure you have the appropriate permissions.
[WARNING] [MTD         ] Unable to open device "/dev/input/event13". Please ensure you have the appropriate permissions.
[WARNING] [MTD         ] Unable to open device "/dev/input/event14". Please ensure you have the appropriate permissions.
[INFO   ] [Base        ] Leaving application in progress...

Process finished with exit code 0

How can I solve this problem?

P.S: My linux is ubuntu 16.04, Intel GPU.