Bosch Maxx 5 WLX20360PL: Error F21 Fix, Drum Not Spinning, F00 Issue, & Reset Steps Explained

Error - F21
The washing machine stopped during washing, the program is standing, the drum does not spin. After switching off the power supply error F21 appeared, no LEDs on the buttons are lit.
After switching on the washing machine (programmer on 6), the touch spin button is held, nothing happens, silence.
Any advice on how to clear the error?
I take care of brushes

Added after 3 [hours] 44 [minutes]:

I was able to unblock the F21 code, but it draws water on all programs, and releases it on some programs. Only the "start / stop" button is lit, but it does not respond.
An F00 error occurred after unlocking. I can unlock it, but the action as above, the drum does not spin.
I removed the code as follows.
The washing machine is unplugged, the knob is set to rinse, I hold the spin button, when the display lights up I switch the knob to spin. I release the spin button and hold it again, switch the knob to the previous position, "rinse", release the sensor button, spin and press again. The washing machine starts, but operates as described above. After turning the washing machine off with the knob and turning it on again, the F00 error continues. When I check the brushes and replace, I will write how it went.

First you remove the cause of the error, and then you clear the error.

I replaced the brushes, cleaned the commutator, it was all black. After switching on the washing machine F0 is displayed, unblocking as I wrote above (I do not know if it is good), the washing machine turns on (all LEDs on the display lights, does not show the washing time, and it probably was before). It works differently on different programs, but not according to the set program. It takes in water, pumps it out, the drum spins and spins. The start / stop button lights up permanently, it does not respond to touch. You cannot turn on the spin button and other options with other buttons, only the LEDs light up as I hold it and go out like a light. After switching off and on again error F0. What to do next?

Added after 1 [hours] 44 [minutes]:

Problem solved, I deleted the programmer incorrectly, it seemed to delete and the washing machine turned on, but it worked incorrectly. After switching on, the F00 code appeared again.
The correct deletion helped: "Try to succeed. Sometimes it will come after a dozen or so attempts. Here https://www.youtube.com/watch?v=dweJTblYf7Y is a smart myk that I use in Bosch for several years."
Thanks to the author. Topic is closed