Amazon file AZW conversion issue

Downloaded ebook which is put in directory with "B01HMNETJA_EBOK.azw"
run convert with calibre and get (See below):
HELPPlease...
Thanks
Ed

This is an Amazon KFX book. It cannot be processed. (Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 109, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 195, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 33, in gui_convert_override
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 26, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 1074, in run
File "site-packages\calibre\customize\conversion.py", line 245, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\mobi_in put.py", line 34, in convert
File "site-packages\calibre\ebooks\mobi\reader\mobi6.py", line 79, in __init__
calibre.ebooks.mobi.reader.mobi6.KFXError: This is an Amazon KFX book. It cannot be processed.