Starting cover download for: Zaginiony symbol 
Query: Zaginiony symbol [u'Dan Brown'] {u'amazon': u'8376590545', u'google': u'OdooCQAAQBAJ', u'isbn': u'9788376590547'} 
Invalid cover from Google Images 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Google Images 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Google Images 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Google Images 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Google Images 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Google 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 
Invalid cover from Amazon.com 
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/covers.py", line 76, in process_result
    data = save_cover_data_to(data)
  File "/usr/lib64/calibre/calibre/utils/img.py", line 220, in save_cover_data_to
    return image_to_data(img, compression_quality, fmt) if changed else data
  File "/usr/lib64/calibre/calibre/utils/img.py", line 162, in image_to_data
    raise ValueError('Failed to export image as ' + fmt + ' with error: ' + w.errorString())
ValueError: Failed to export image as JPEG with error: Image is empty
 

****************************** Google Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36')] 
Failed to download valid cover 
Took 2.95969700813 seconds 
No cached cover found, running identify
Making query: https://books.google.com/books/feeds/volumes?q=isbn%3A9788376590547&max-results=20&min-viewability=none&start-index=1
No results found, retrying without identifiers
Making query: https://books.google.com/books/feeds/volumes?q=intitle%3AZaginiony+intitle%3Asymbol%2Binauthor%3ADan+inauthor%3ABrown&max-results=20&min-viewability=none&start-index=1
Downloading cover from: https://books.google.com/books?id=OdooCQAAQBAJ&printsec=frontcover&img=1 

******************************************************************************** 

****************************** Google Images Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0')] 
Failed to download valid cover 
Took 1.19285988808 seconds 
Search URL: https://www.google.com/search?as_st=y&tbm=isch&as_q=Zaginiony+symbol+Dan+Brown&as_epq=&as_oq=&as_eq=&cr=&as_sitesearch=&safe=images&tbs=isz:lt,islt:svga,iar:t,ift:jpg
Downloading 5 covers
Downloaded cover from: https://3.allegroimg.com/original/0cc93b/6ec7b8c4445da8dc1a9e1bb83333
Downloaded cover from: https://www.geeklife.pl/wp-content/uploads/2010/04/5483e331a9bace540b3a2478fc014e25_XL.jpg
Downloaded cover from: https://www.soniadraga.pl/materialy/prod/big/302.jpg
Downloaded cover from: https://thumbs.img-sprzedajemy.pl/1000x901c/af/50/6e/zaginiony-symbol-dan-brown-rok-wydania-2010-warszawa-496720815.jpg
Downloaded cover from: https://thumbs.img-sprzedajemy.pl/1000x901c/5b/20/b8/dan-brown-zaginiony-symbol-nowa-brzozow-sprzedam-492882368.jpg 

******************************************************************************** 

****************************** Amazon.com Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (X11; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0'), (u'Accept', u'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'), (u'Upgrade-insecure-requests', u'1'), (u'Referer', u'https://www.google.com/search?q=8376590545+site%3Awww.amazon.com')] 
Failed to download valid cover 
Took 4.02268004417 seconds 
No cached cover found, running identify
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Server: auto
Making google query: https://www.google.com/search?q=8376590545+site%3Awww.amazon.com
Getting details from: https://webcache.googleusercontent.com/search?q=cache:tcKr7z-5mpkJ:https://www.amazon.com/Zaginiony-symbol-Dan-Brown/dp/8376590545+&cd=1&hl=pl&ct=clnk&gl=pl
Downloading cover from: https://images-na.ssl-images-amazon.com/images/I/41jrYnl6quL.jpg 

******************************************************************************** 

****************************** Edelweiss Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:51.0) Gecko/20100101 Firefox/51.0')] 
Failed to download valid cover 
Took 0.0541460514069 seconds 
No cached cover found, running identify
Currently Edelweiss returns random books for search queries
No cover found 

******************************************************************************** 

****************************** Open Library Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36')] 
Failed to download valid cover 
Took 0.942116975784 seconds 
No cover for ISBN: u'9788376590547' found 

******************************************************************************** 

****************************** Overdrive Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36')] 
Failed to download valid cover 
Took 1.527987957 seconds 
No cached cover found, running identify
Initial query is Dan Brown
Cross reference query is Zaginiony
No cover found 

******************************************************************************** 

****************************** Douban Books Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36')] 
Failed to download valid cover 
Took 1.52785897255 seconds 
No cached cover found, running identify
Failed to make identify query: u'https://api.douban.com/book/subject/isbn/9788376590547?apikey=0bd1672394eb1ebf2374356abec15c3d'
Traceback (most recent call last):
  File "/usr/lib64/calibre/calibre/ebooks/metadata/sources/douban.py", line 319, in identify
    raw = br.open_novisit(query, timeout=timeout).read()
  File "/usr/lib64/python2.7/site-packages/mechanize/_mechanize.py", line 239, in open_novisit
    url_or_request, data, visit=False, timeout=timeout)
  File "/usr/lib64/python2.7/site-packages/mechanize/_mechanize.py", line 310, in _mech_open
    raise response
httperror_seek_wrapper: HTTP Error 404: Not Found

No cover found 

******************************************************************************** 

****************************** OZON.ru Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36')] 
Failed to download valid cover 
Took 0.253564834595 seconds 
No cached cover found, running identify
cannot format ISBN 9788376590547. Fow now only russian ISBNs are supported
OZON.ru requires formatted ISBN for search. 9788376590547 cannot be formated - removed. (only Russian ISBN format is supported now)
search url: https://www.ozon.ru/?context=search&group=div_book&text=Dan+Brown+Zaginiony+symbol
No SearchResults in Ozon.ru response found!
No cover found 

******************************************************************************** 

****************************** Big Book Search Covers ****************************** 
Request extra headers: [('User-agent', u'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586')] 
Failed to download valid cover 
Took 0.643305063248 seconds 
No images found for, title: u'Zaginiony symbol' and authors: [u'Dan Brown'] 

********************************************************************************