title: Internal error: Drop all secondary indexes before importing table onlinelogistics/users when .cfg file is missing
body: <p>I want to recover sql tables from ibd file.</p>
  <p>I followed these steps but it didn't work.
  First I discarded tablespace using command Alter table users disard tablespace.
  Then, i deleted newly generated users.idb file
  Then, I copied required users.ibd file to that database in mysql/data/onlinelogistics folder
  then, i tried to import tablespace but it showed this error</p>
  <p><strong>#1815 - Internal error: Drop all secondary indexes before importing table onlinelogistics/users when .cfg file is missing.</strong></p>
  <p><a href="https://i.stack.imgur.com/lKejv.png" rel="nofollow noreferrer">Error Image</a></p>