Solving error: creating window glfw error: glew initialization error: missing GL version

In the use of mujoco The following error appears ：

Creating window glfw
ERROR: GLEW initalization error: Missing GL version

When this error occurs, the simulation will not be displayed .

Solution ：
1. To configure bashrc

gedit ~/.bashrc

Add the following code to the last line of the document and save to exit the document

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGLEW.so

Then run the following code source once bashrc file ：

source ~/.bashrc

2. To configure pycharm
Click on pycharm Medium Run->Edit Configurations->Environment variables Then add variables Name yes LD_PRELOAD, Corresponding Value yes /usr/lib/x86_64-linux-gnu/libGLEW.so, Save exit and rerun the code .

You can see the following figure , Normal simulation screen appears .