tigervncsesrver -> (EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE)

When I try to start a Tiger VNC server with an SSH tunnel, I get the following error: _XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed _XSERVTransMakeAllCOTSServerListeners: server already running (EE) Fatal server error: (EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE) To start it, I use the command tigervncserver -localhost :1. I have tried running tigervncserver -kill :1, but it says there is no VNC server. I have already removed the files /tmp/.X1-lock and /tmp/.X11-unix/.X1. It starts up when I use the command tigervncserver -localhost :2, but I want to use display :1 Using netstat -lp | grep X1, I see unix 2 [ ACC ] STREAM LISTENING 37348 2140/Xorg @/tmp/.X11-unix/X0 unix 2 [ ACC ] STREAM LISTENING 4670129 951048/Xorg /tmp/.X11-unix/X1 unix 2 [ ACC ] STREAM LISTENING 4670128 951048/Xorg @/tmp/.X11-unix/X1 unix 2 [ ACC ] STREAM LISTENING 37349 2140/Xorg /tmp/.X11-unix/X0 But when I try to kill the Xorg process 951048, another Xorg process is automatically created that uses /tmp/.X11-unix/X1 and the same error appears. I have already looked at these two questions, but they said to remove the files from /tmp which I have already done. https://unix.stackexchange.com/questions/232749/xvfb-screen-cannot-establish-any-listening-sockets-make-sure-an-x-server https://unix.stackexchange.com/questions/314876/xvfb-screen-ee-cannot-establish-any-listening-sockets So my question is how do I fix this error and start a VNC server with display :1?