What does mean the following error message when trying to embed metadata?
Quote:
calibre, version 2.25.0
WARNING: Failed for some files: Failed to embed metadata into some book files. Click "Show details" for details.
The PDF format of Photoshop CS6: Visual QuickStart Guide:
Traceback (most recent call last):
File "site-packages\calibre\customize\ui.py", line 365, in set_file_type_metadata
File "site-packages\calibre\customize\builtins.py", line 502, in set_metadata
File "site-packages\calibre\ebooks\metadata\pdf.py", line 160, in set_metadata
File "site-packages\calibre\utils\podofo\__init__.py", line 41, in set_metadata
Exception: Failed to set PDF metadata: Traceback (most recent call last):
File "site-packages\calibre\utils\ipc\simple_worker.py", line 274, in main
File "site-packages\calibre\utils\podofo\__init__.py", line 57, in set_metadata_
Error: ePdfError_InvalidDataType
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