Title: Error with Groups
Last modified: August 13, 2020

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# Error with Groups

 *  [thoms005](https://wordpress.org/support/users/thoms005/)
 * (@thoms005)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/error-with-groups/)
 * I’m trying to create a new list with the Group By set to Year Month and I get:
 * Warning: Illegal string offset ‘id’ in /usr/home/firestream/public_html/mysite.
   com/wp-content/plugins/w4-post-list/admin/class-admin-lists-table-columns.php
   on line 90
 * I’m running Version 2.3.6 of the plugin.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Shazzad Hossain Khan](https://wordpress.org/support/users/sajib1223/)
 * (@sajib1223)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/error-with-groups/#post-13259086)
 * Can you please provide specific step to reproduce this ? I wasn’t able to product
   it.
 * Could it be a conflict with other plugin/theme ?
 *  Thread Starter [thoms005](https://wordpress.org/support/users/thoms005/)
 * (@thoms005)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/error-with-groups/#post-13262161)
 * I was able to track it down. I disabled all plugins and I still got the error.
   The site was running PHP 7.4.6. I changed it back to PHP 7.3.18 and the problem
   disappeared.
 * So it is a problem with PHP 7.4. To reproduce it, create a new list and click
   anything in the Posts section. Editing an existing list also causes it.
 *  Plugin Author [Shazzad Hossain Khan](https://wordpress.org/support/users/sajib1223/)
 * (@sajib1223)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/error-with-groups/#post-13262337)
 * Thank you very much for your effort. Now i was able to trace the issue. Will 
   update asap.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Error with Groups’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Shazzad Hossain Khan](https://wordpress.org/support/users/sajib1223/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/error-with-groups/#post-13262337)
 * Status: not resolved