install error

[debanjansen48]

i wrote the path in .vmdrc

  }
}
# </materials>

}

state : active

if { 1 } {
}

}
set auto_path "$auto_path $::env $HOME/POVME/vmdplugin"
menu main on
vmd_install_extension povme2 povme2_tk_cb "Analysis/POVME2"
set ::povme2::povme2_directory "$::env $HOME/POVME/POVME3.py"

End Theme File

but it returns following error
Info) Compiling OptiX shaders on 2 target GPUs...
Info) Dynamically loaded 3 plugins in directory:
Info) /usr/local/lib/vmd/plugins/LINUXAMD64/molfile
after#0
can't read "::env": variable is array
The povme2 package could not be loaded:

can't read "::env": variable is array
vmd > ERROR) Creation of window for 'povme2' failed (invalid command name "povme2_tk_cb").