[Leonatus]

I installed it, but now this error occurs:

calibre, version 5.0.1
FEHLER: Modify ePub failed: No ePub files were updated

Modify ePubs
Logfile for book ID 724 (Der Hochwald / Adalbert Stifter)
724

  Modifying:  C:\CalibreData\Temporary\calibre_pwwbj6fc\t3bjk95m_modify_epub\724.epub

	Updating metadata and cover

Parsing xml file: OEBPS/content.opf

Parsing xml file: OEBPS/toc.ncx

	Looking for redundant entries in manifest

	Looking for unmanifested files

	Looking for broken links in the NCX

	Looking for html pages containing only broken image links

	Looking for non dc: elements in manifest

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d588>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d7e8>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d788>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d848>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d828>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d868>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d8c8>

	  Removing child: <Element {http://www.idpf.org/2007/opf}meta at 0x5b7d888>

	Looking for CSS margins

Der Hochwald - ERROR: Traceback (most recent call last):

  File "calibre_plugins.modify_epub.modify", line 79, in process_book

  File "calibre_plugins.modify_epub.modify", line 175, in _process_book

  File "calibre_plugins.modify_epub.modify", line 423, in _rewrite_css_margins

  File "calibre_plugins.modify_epub.margins", line 170, in rewrite_css_margins

  File "calibre_plugins.modify_epub.container", line 222, in get_raw

  File "codecs.py", line 322, in decode

UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 7: invalid start byte



ePub not changed after 0.95 seconds