I'm trying to uninstall the "Browsing History Recommender" but I get the HTTP 500 Server error. I want to remove this module completely from the database and FTP.

I have been searching for a solution but no luck, I have also read this question. How to manually uninstall/purge modules?

Please Help. Thanks

Drupal 7 Ubercart 3

  • HTTP 500 leaves full error message in server's error.log - could you try and provide it to us?
    – Mołot
    Jul 8, 2013 at 15:25
  • @Mołot is error.log part of Drupal files? Would I have it on my FTP account? Jul 8, 2013 at 15:51
  • Nope, unless your host made it available to you. Many do. If so, you will have public_html or similar directory for your web files, and next to it dir named like logs. If not, you will probably need to ask your provider - unless answer below is sufficient.
    – Mołot
    Jul 8, 2013 at 17:09

1 Answer 1


If you have access to ssh, use drush to disable and uninstall the module. If you do not have access, disable your module, set the status to 0 for the module name that you want to disable.

UPDATE system SET status='0' WHERE name='module_name';

And then you can manually delete the table "history_rec_user_map".

It however has two variables ('history_rec_uid_watermark' and 'history_rec_last_aid') in the variables table. Use variable_del to delete them

To remove modules, you have to remove them from your server's modules directory (usually sites/all/modules/).


To delete the modules blocks use delete from block where module = 'MODULE'

  • Thank You, it worked. but I'm still having the following error if i'm in the edit user profile page. I'm not sure if I should ask as a new question. see the following comment. Jul 8, 2013 at 20:15
  • Notice: Undefined index: history_rec_similar_nodes-block in block_form_user_profile_form_alter() (line 571 of /var/www/*ftp*/modules/block/block.module). Notice: Undefined index: 144ad102b79a0a2e9351fdc1767d1615 in block_form_user_profile_form_alter() (line 571 of /var/www/*ftp*/modules/block/block.module). Notice: Undefined index: uc_rec_similar_products-block in block_form_user_profile_form_alter() (line 571 of /var/www/*ftp*/modules/block/block.module). Jul 8, 2013 at 20:18
  • 1
    I have updated the answer
    – 4life
    Jul 8, 2013 at 20:26
  • Thank You so much. I ended up deleting all the blocks manually from the Blocks table. Thank you again. :-) Jul 8, 2013 at 20:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.