The Log field needs to be installed.

Did you perhaps use the other Feeds Log → module before? If so, try to reinstall the Feeds Log module that comes with Feeds.

Reinstalling the Feeds Log module is what you can try first anyway.

@megachriz thanks, I tried to uninstall the feeds log module which comes with feeds but got following error and uninstall not working

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'feeds_log' in 'where clause': SELECT 1 AS "expression"  
  FROM                                                                                                            
  "feeds_feed" "t"                                                                                                
  WHERE "feeds_log" IS NOT NULL                                                                                   
  LIMIT 1 OFFSET 0; Array                                                                                         
  (                                                                                                               
  ) 

Well, that demonstrates at least that the module was not properly installed. This error says that a database column is missing in the feeds_feed table.

With phpmyadmin I've exported all Feeds Log tables and the feeds_log field for the feeds_feed table. See attachment.
After you have ran this SQL, I expect that you can properly uninstall and then install Feeds Log again.

I hope this fixes your issue. If not, feel free to reopen.

@megachriz it worked, thanks for your support.

Automatically closed - issue fixed for 2 weeks with no activity.