<div>
There seems to be some discussion around it here:<br />
<a href="https://www.drupal.org/node/1220954" rel="ugc">https://www.drupal.org/node/1220954</a><br />
<br />
Did you recently update modules or Drupal core? Have you run update.php?<br />
<br />
Did you delete the media_gallery module? If so, try putting it back in place.
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There seems to be some discussion around it here:
https://www.drupal.org/node/1220954 [https://www.drupal.org/node/1220954]

Did you recently update modules or Drupal core? Have you run update.php?

Did you delete the media_gallery module? If so, try putting it back in place.

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<div class="content wysiwyg-content">
Error message<br />
EntityFieldQueryException:<wbr /> Unknown field: media_gallery_expose_block<wbr /> in EntityFieldQuery-&gt;addField<wbr />Condition(<wbr />) (line 817 of C:\xampp\htdocs\ministry of trade\includes\entity.inc)<wbr />.
</div>
</div>


Error message
EntityFieldQueryException: Unknown field: media_gallery_expose_block in EntityFieldQuery->addFieldCondition() (line 817 of C:\xampp\htdocs\ministry of trade\includes\entity.inc).

how can i solve the error on line 817 in includes\entity.inc

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