Beckhoff Problem with Communication (TwinCAT, LinuxCNC)

Hey Guys,some of you know so much about this Topic so I hope I can find someone in the mood to help me.Im trying to make a CNC 3-Axis on Raspberry PI5 and Beckhoff, the problem is that im completly new in this topic and try to learn as much as possible but i got already stuck in the beginning. EtherCAT works fine and i got the "Koppler" and Cards but if im trying to get them into LinuxCNC like some videos teach the Programm wont start anymore

If i start i get the message: Failed to register PDO entry: No such file or directory
LCEC: master 0 PDO enty registration failed

A friend and myself checked the code 10x, and it seems that the problem starts before. I cant get the EK1100 connected to TwinCat or CodeSYS, too. Whats kind of weird to me because as i said if I try it with the "ethercat slaves" command, it knows The Ek1100 and all Cards


Thanks for everybody who can help me with this and invests some of his time for me

Better like that?

seems like the lcec file in the hal fie has an invalid path. or XML has an invalid path.

Only way to know is to have the xml and hal files, the error messages and some lines around them, and the last say 30 lines of the syslog.