Dump DSDT OC Laptop

Hello I have problems dumping the DSDT. I have tried the following methods:

- Created the folder EFI/OC/ACPI/origin and pressed f4 in OC -> nothing appeared in the origin folder.

- adding acpidump.efi to Tools and to config (unsing ProperTree):

- When I run it using the option in OC it gives this error: "OCB StartImage failed - Unsupported \n Halting on critical error"

- When I run it using the Shell (command: acpidump.efi -b -n DSDT) it gives this error: "Could not get ACPI table with signature [DSDT], AE_NOT_FOUND"

- I tried dumping DSDT using Linux and SSDTTime but if I want to compile it using MaciASL it throws 201 errors. (Can I fox them easily?)

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Here is my config. My Laptop is a Thinkpad x240. If you need any more information, please tell me.
How do I dump the DSDT? Thanks a lot!