TCP connection error

[!] Panda3D                   :linmath(warning): Tried to invert singular LMatri
x4.

[!!!] Panda3D                 :net(error): Unable to open TCP connection to serv
er 127.0.0.1 on port 5185


[!!!] Panda3D                 :pstats(error): Couldn't connect to PStatServer at
 localhost:5185


[!!!] Panda3D                 :net(error): Unable to open TCP connection to serv
er 127.0.0.1 on port 5185


[!!!] Panda3D                 :pstats(error): Couldn't connect to PStatServer at
 localhost:5185