Quaternion and Euler

[shorttrack789]

1. Get quaternion - rot=pybullet.getbasepositionandorientation()[1]
2. Cast it into euler - roteuler=fromquaterniontoeuler(rot)
3. Rotate - glm.mat4() glm.rotate(roteuler)

This code makes a issue which the Object keep rotating reversed intervaly.

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Why is this happening?
And how can I fix it to work right?