How do I fix this problem?
ts3bot@ns303569:~/TeamSpeak3-Client-linux_amd64$ xinit /home/ts3bot/TeamSpeak3-Client-linux_amd64/ts3client_linux_amd64 -- /usr/bin/Xvfb :1 -screen 0 800x600x16 -ac
xinit: XFree86_VT property unexpectedly has 0 items instead of 1
Cannot mix incompatible Qt library (version 0x50500) with this library (version 0x50601)
xinit: connection to X server lost
waiting for X server to shut down
2016/08/30 19:18:27 f4c7fb6d 5c0e69f5 INFO Starting instance ts3server://ts.***.de?port=9987&nickname=EmmaWatson&password=&cid=215&channelpassword=
2016/08/30 19:18:27 f4c7fb6d 5c0e69f5 INFO TSClient quit.
ts3bot@ns303569:~/TeamSpeak3-Client-linux_amd64$ xinit /home/ts3bot/TeamSpeak3-Client-linux_amd64/ts3client_linux_amd64 -- /usr/bin/Xvfb :1 -screen 0 800x600x16 -ac
xinit: XFree86_VT property unexpectedly has 0 items instead of 1
Cannot mix incompatible Qt library (version 0x50500) with this library (version 0x50601)
xinit: connection to X server lost
waiting for X server to shut down
2016/08/30 19:18:27 f4c7fb6d 5c0e69f5 INFO Starting instance ts3server://ts.***.de?port=9987&nickname=EmmaWatson&password=&cid=215&channelpassword=
2016/08/30 19:18:27 f4c7fb6d 5c0e69f5 INFO TSClient quit.