MailChimp Plugin: "Illegal string offset" error messages

The MailChimp plugin was in the list of plugins to select from, so I chose WPMU Dev Dashboard just so I could submit this ticket.

On the Mailchimp Sync plugin setting page, under the “Log” tab, it shows some history and then lots of these messages repeatedly:

Warning: Illegal string offset ‘date’ in /home/crownque/public_html/ on line 713

Warning: Illegal string offset ‘message’ in /home/crownque/public_html/ on line 713

I’ve already enabled support access for the site.

  • Nastia
    • Support Rock Star

    Hello Caleb ,

    I trust you’re doing well today!

    Thank you for granting access to your site, I can see the warnings though I can’t replicate them on my site. I’ve tested it wit the same PHP version that your server running on 5.6 and with PHP ver. 7.0.

    Please run a quick check for a conflict with another plugin or theme.

    Deactivate all other plugins, leave the Mailchimp Sync activated and check if the warnings still there. If everything is well, activate one plugin at a time to find the one that causes this.

    Follow the steps from the flowchart:

    Let me know how it went!

    Kind regards,


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