I'm using the most recent version of calibre and all plugins are updated:
Its not falling back to duck duck go.
Code:
****************************** Google (1, 1, 0) ******************************
Found 0 results
Downloading from Google took 3.369441032409668
Making query: https://books.google.com/books/feeds/volumes?q=intitle%3ADay+intitle%3Aof+intitle%3AReckoning%2Binauthor%3AJohn+inauthor%3AWinchester&max-results=20&start-index=1&min-viewability=none
No results found, doing a web search instead
Making query: https://www.google.com/search?q=Day+of+Reckoning+John+Winchester&tbm=bks
Plugin Google failed
Traceback (most recent call last):
File "calibre\ebooks\metadata\sources\identify.py", line 47, in run
File "", line 533, in identify
File "", line 438, in identify_via_web_search
File "", line 93, in query
File "mechanize\_mechanize.py", line 241, in open_novisit
File "mechanize\_mechanize.py", line 313, in _mech_open
mechanize._response.get_seek_wrapper_class..httperror_seek_wrapper: HTTP Error 429: Too Many Requests