Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/librosa/\_\_init__.py", line 12, in <module>

from . import core


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/librosa/core/\_\_init__.py", line 125, in <module>

from .time_frequency import *
# pylint: disable=wildcard-import


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/librosa/core/time_frequency.py", line 11, in <module>

from ..util.exceptions import ParameterError


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/librosa/util/\_\_init__.py", line 77, in <module>

from .utils import *
# pylint: disable=wildcard-import


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/librosa/util/utils.py", line 5, in <module>

import scipy.ndimage


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/\_\_init__.py", line 156, in <module>

from . import fft


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/fft/\_\_init__.py", line 76, in <module>

from ._basic import (


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/fft/_basic.py", line 1, in <module>

from scipy._lib.uarray import generate_multimethod, Dispatchable


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/_lib/uarray.py", line 27, in <module>

from ._uarray import *


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/_lib/_uarray/\_\_init__.py", line 114, in <module>

from ._backend import *


 "/home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/_lib/_uarray/_backend.py", line 15, in <module>

from . import _uarray
# type: ignore
ImportError: /home/splab/anaconda3/envs/Kai.Lib/lib/python3.7/site-packages/scipy/_lib/_uarray/_uarray.cpython-37m-x86_64-linux-gnu.so: symbol _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_assignERKS4_, version GLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference

> Traceback (most recent call last):


 "/home/tkr/python_lib/gym/gym/envs/classic_control/rendering.py", line 27, in <module>

from pyglet.gl import *


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/gl/__init__.py", line 221, in <module>

from .xlib import XlibConfig as Config


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/gl/xlib.py", line 12, in <module>

from pyglet.canvas.xlib import XlibCanvas


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/canvas/__init__.py", line 103, in <module>

from pyglet.canvas.xlib import XlibDisplay as Display


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/canvas/xlib.py", line 16, in <module>

from pyglet.app.xlib import XlibSelectDevice


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/app/__init__.py", line 175, in <module>

event_loop = EventLoop()


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/app/base.py", line 119, in __init__

self.clock = clock.get_default()


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/__init__.py", line 384, in __getattr__

__import__(import_name)


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/clock.py", line 169, in <module>

_c = pyglet.lib.load_library('c')


 "/home/tkr/anaconda3/lib/python3.7/site-packages/pyglet/lib.py", line 158, in load_library

raise ImportError('Library "%s" not found.' % names[0])
ImportError: Library "c" not found.
