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I have seen many people do not want to show breadcrumb links on their Drupal website. The default Drupal 7 theme Bartik do not have option to show / hide this breadcrumb links.

If you want to remove breadcrumb links from Bartik theme, follow these steps:

Step 1:

Open following file in any text editor of bartik theme.

Your drupal powered website may show error message like PDO not found.
The error message may be something like this:

Fatal error: Class 'PDO' not found in /home/username/public_html/includes/database/database.inc on line 184

Solution

1. Create a file php.ini in public_html folder
2. Add following code:
   

   extension=pdo.so
   extension=pdo_mysql.so

3. Save php.ini file

Done!!!

Your Drupal powered website may start showing following error message:

Cause of error message

Your hosting provider has disabled PHP function ini_set() on server.
This is generally done to increase server security. Some server security expert highly recommend to disable ini_set() on server

Solution

Solution one:
Contact your hosting provider and ask them to enable ini_set() on the server.

Solution two:

You may see these types of error message in your Drupal installation.