Teamviewer 12 don't show GUI on Ubuntu 18.04

My Teamviewer 12 don't show GUI on Ubuntu 18.04.

$ teamviewer
Init...
CheckCPU: SSE2 support: yes
XRandRWait: No value set. Using default.
XRandRWait: Started by user.
Checking setup...
Launching TeamViewer ...
Launching TeamViewer GUI ...

... and nothing.

client.conf
[strng] FT_Start_Directories = ""
[int32] LastCorrectorRun = 1
[strng] Meeting_UserName = "xxx-xxx"

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