[PyMOL] Problem with Open source Pymol 2.3.0 (missing external GUI)

[<Ta...@em...>]

To whom it may concern,

I installed the pymol on my machine with Ubuntu 18.04.1 LTS

I have a problem with 'Qt not available, using GLUT/Tk interface' when  
install pymol with:

python setup.py install  
--prefix=/home/mauricetam/software/pymol-2.3.0/ --use-msgpackc=no

After I installed it with:

python setup.py install  
--prefix=/home/mauricetam/software/pymol-2.3.0/ --use-msgpackc=no --glut

Now, the problem is I don't see the external GUI and there is an error  
as shown below:

Warning: GL_DRAW_BUFFER0=0 -> using GL_BACK
  Detected OpenGL version 3.0. Shaders available.
  Geometry shaders not available
  Detected GLSL version 1.30.
  OpenGL graphics engine:
   GL_VENDOR:   Intel Open Source Technology Center
   GL_RENDERER: Mesa DRI Intel(R) Haswell Mobile
   GL_VERSION:  3.0 Mesa 18.2.2
Traceback (most recent call last):
   File  
"/home/mauricetam/software/pymol-2.3.0/lib/python2.7/site-packages/pmg_tk/__init__.py", line 27, in  
run
     from .PMGApp import PMGApp
   File  
"/home/mauricetam/software/pymol-2.3.0/lib/python2.7/site-packages/pmg_tk/PMGApp.py", line 22, in  
<module>
     import Pmw
ImportError: No module named Pmw
  Detected 4 CPU cores.  Enabled multithreaded rendering.

Any idea what is going wrong on my machine?

Thank you for the help.

Best
Heng-Keat