Etherape does not open, it's just only the crash report

 1) Description: Ubuntu 18.04 LTS
Release: 18.04
2) etherape:
  Installiert: 0.9.16-1
  Installationskandidat: 0.9.16-1
  Versionstabelle:
 *** 0.9.16-1 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: etherape 0.9.16-1
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Jun 5 19:57:13 2018
InstallationDate: Installed on 2018-05-01 (35 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: etherape
UpgradeStatus: Upgraded to bionic on 2018-05-02 (34 days ago)