copyparty failed to add the following files to the archive:

 file: 'archives/lock'
error: [PermissionError] [Errno 13] Permission denied: b'mnt/rpi/apt-cache/archives/lock'
-- util.py:3215 <yieldfile>: with open(fsenc(fn), "rb", bufsz) as f:
-- szip.py:245 <ser>: for buf in yieldfile(src, self.args.iobuf):
-- szip.py:283 <gen>: for x in self.ser(f):

NOTE: filepaths sanitized; see serverlog for correct values