Code:
calibre, version 5.11.0
WARNING: Error while saving: Failed to update metadata in some books, click "Show details" for more information
Failed to update the metadata in the RTF format of: The Red Fairy Book by Andrew Lang, with error:
Traceback (most recent call last):
File "sre_parse.py", line 1039, in parse_template
KeyError: '\\s'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "calibre/customize/ui.py", line 447, in set_file_type_metadata
File "calibre/customize/builtins.py", line 559, in set_metadata
File "calibre/ebooks/metadata/rtf.py", line 217, in set_metadata
File "calibre/ebooks/metadata/rtf.py", line 209, in replace_or_create
File "re.py", line 327, in _subx
File "re.py", line 318, in _compile_repl
File "sre_parse.py", line 1042, in parse_template
re.error: bad escape \s at position 1 (line 1, column 2)
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