transferring large files with Ventura 13.2.1 (22D68) gives error code -51

Greetings!

Error code -51 on macOS Ventura typically indicates a file transfer error related to permissions or file system issues (not always critical). Here are a few things you can try to resolve this error:

1. Check the file permissions: Make sure the file you are trying to transfer has the correct permissions and that you have permission to access it. You can check the file permissions by right-clicking on the file and selecting "Get Info". In the "Sharing & Permissions" section, make sure your user account has "Read & Write" access.
2. Use a different transfer method: If you are trying to transfer the file over a network, try using a different transfer method such as a USB drive or an external hard drive.
3. Verify the file system: Make sure that the file system on both the source and destination drives are compatible with each other. For example, if one drive is formatted as NTFS and the other is formatted as HFS+, they may not be compatible.
4. Repair the disk: Use Disk Utility to repair any errors on the source and destination drives. Open Disk Utility, select the drive, and click on "First Aid" to start the repair process

Also found similar topic, with the same problem (quite obsolete though):

Error code -51 when I attempt to transfer… - Apple Community

Not that it will magically fix the problem, but the current version of Ventura is 13.3. You might want to update to that version in addition.

macOS Ventura 13.3 Release Notes | Apple Developer Documentation