FOC configuration - Motor stalls during measurement

Hello all,
I am new to the platform and have just started configuring my engine. About the setup engine FOC this was also correctly detected and ran properly. In the FOC settings of the engine settings I wanted to test again RL, which also worked. However, when testing the engine flux linkage, the engine starts first and then blocks abruptly.
What could be the reason for this?
Do I have to adjust another setting?
The motor polarity is actually automatically detected, or am I wrong?

I'm trying now unfortunately for several days with it around.
Many greetings!