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I have been trying to get pptk viewer to run through docker (ubuntu) on a MacBook. I can get glxgears to work, spyder to work through the same environment. But have been unable to get pptk to work. Errors are

QOpenGLShader: could not create shader
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
Viewer: TCP server set up on port  44327

QOpenGLShaderProgram::uniformLocation( colorBottom ): shader program is not linked
QOpenGLShaderProgram::uniformLocation( colorTop ): shader program is not linked
QOpenGLShaderProgram::attributeLocation( position ): shader program is not linked
QOpenGLShaderProgram::attributeLocation( position ): shader program is not linked```

Any help will be appreciated