Error while input google maps embedded code

Hello everyone.
I'm using codeigniter 3.1.4, and use the form helper to generate input form.
I use form_textarea() function to generate textarea. When I copy google map embedded code in the textarea, and submit the form, I get the following error at google chrome :

Chrome detected unusual code on this page and blocked it to protect your personal information (for example, passwords, phone numbers, and credit cards). ERR_BLOCKED_BY_XSS_AUDITOR

And the data I submitted to controller cannot be proceed. How to fix this?

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