Fragment shader failed to compile

Upon running, I receive the following error message:

Compiling Vertex Shader...
Compiling Fragment Shader...
Fragment shader failed to compile with the following errors:
ERROR: 0:66: error(#132) Syntax error: "=" parse error
ERROR: error(#273) 1 compilation errors.  No code generated

Traceback (most recent call last):
  File "ray_marcher_demo.py", line 253, in <module>
    program = shader.compile(camera)
  File "shader.py", line 73, in compile
    program = self.compile_program(v_shader, f_shader)
  File "shader.py", line 106, in compile_program
    fragment_shader = self.compile_shader(fragment_source, GL_FRAGMENT_SHADER)
  File "shader.py", line 92, in compile_shader
    raise ValueError, 'Shader compilation failed'
ValueError: Shader compilation failed

No idea if i’m doing something wrong here, (still relatively new to coding and GitHub), although I haven’t altered the file in any way, and have all the required dependencies, but thought i would bring it up anyway.

[slowkow]

I get the same error, just running the script after cloning from github:

$ python ray_marcher_demo.py
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
Compiling Vertex Shader...
ERROR: 0:1: '' :  version '330' is not supported
ERROR: 0:1: '' : syntax error: #version
ERROR: 0:2: '(' : syntax error: Array size must appear after variable name

Traceback (most recent call last):
  File "ray_marcher_demo.py", line 253, in <module>
    program = shader.compile(camera)
  File "github.com/HackerPoet/PySpace/pyspace/shader.py", line 73, in compile
    program = self.compile_program(v_shader, f_shader)
  File "github.com/HackerPoet/PySpace/pyspace/shader.py", line 102, in compile_program
    vertex_shader = self.compile_shader(vertex_source, GL_VERTEX_SHADER)
  File "github.com/HackerPoet/PySpace/pyspace/shader.py", line 92, in compile_shader
    raise ValueError, 'Shader compilation failed'
ValueError: Shader compilation failed
(

$ conda list
# packages in environment at miniconda3/envs/py27:
#
# Name                    Version                   Build  Channel
ca-certificates           2018.03.07                    0
certifi                   2018.11.29               py27_0
libcxx                    4.0.1                hcfea43d_1
libcxxabi                 4.0.1                hcfea43d_1
libedit                   3.1.20170329         hb402a30_2
libffi                    3.2.1                h475c297_4
ncurses                   6.1                  h0a44026_1
numpy                     1.16.0                    <pip>
openssl                   1.1.1a               h1de35cc_0
pip                       18.1                     py27_0
pygame                    1.9.4                     <pip>
pyopengl                  3.1.1a1                  py27_0
python                    2.7.15               h8f8e585_6
readline                  7.0                  h1de35cc_5
setuptools                40.6.3                   py27_0
sqlite                    3.26.0               ha441bb4_0
tk                        8.6.8                ha441bb4_0
wheel                     0.32.3                   py27_0
zlib                      1.2.11               h1de35cc_3

$ python2 --version
Python 2.7.15 :: Anaconda, Inc.

[sharad-s]

receiving the same issue when trying to run this script unmodified on python2 and python3 on MacOS Mojave