Welcome back to the Wefugees Community and thank you for your question!
As long as your main job is in the field of your profession, I don't think that having an additional Minijob is causing any trouble. However, please be aware that you may have to inform your main employer about your other part-time job as well.
Would you agree dear @mbeon-Christine?
In any case, please do not hesitate to get back to us with any further questions.
All the best,