pgadmin4: Server does not launch

FWIW I can build a pgAdmin4 file ok on openSUSE linux, but on launch I see:

~/pgadmin4/runtime> ./pgAdmin4
Python path:  "/usr/lib64/python2.7"
Webapp path:  "/home/colin/pgadmin4/web/pgAdmin4.py"
Traceback (most recent call last):
   File "/home/colin/pgadmin4/web/pgAdmin4.py", line 23, in <module>
     import config
   File "/home/colin/pgadmin4/web/config.py", line 255, in <module>
     from config_local import *
   File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
   File "<frozen importlib._bootstrap>", line 2222, in
_find_and_load_unlocked
   File "<frozen importlib._bootstrap>", line 2164, in _find_spec
   File "<frozen importlib._bootstrap>", line 1940, in find_spec
   File "<frozen importlib._bootstrap>", line 1914, in _get_spec
   File "<frozen importlib._bootstrap>", line 2049, in find_spec
   File "<frozen importlib._bootstrap>", line 53, in _path_join
   File "<frozen importlib._bootstrap>", line 53, in <listcomp>
TypeError: Type str doesn't support the buffer API
"Failed to launch the application server, server thread exiting."