file field: deprication warning when file is svg - Meta Box

This topic has 2 replies, 2 voices, and was last updated 10 months, 2 weeks ago by Aaron Kessler.

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January 11, 2024 at 6:33 AM #44260

Aaron Kessler
Participant

Using the file field type with an uploaded SVG prints a deprecation warning:

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in .../wp/wp-includes/post.php on line 3308

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January 11, 2024 at 8:34 PM #44266

Peter
Moderator

Hello Aaron,

If you upload the SVG file to the WordPress Media library, does the error message appear? If yes or you cannot upload the file, mostly the SVG mime type is not allowed on your site.
Please follow this article to enable SVG support and recheck this issue https://wpengine.com/resources/enable-svg-wordpress/

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January 11, 2024 at 11:22 PM #44270

Aaron Kessler
Participant

Hey Peter, SVG upload is working as expected. I am using https://wordpress.org/plugins/svg-support/ as your article suggests. It is just the warning. The fields are defined as in https://support.metabox.io/topic/file-field-does-not-validate-or-remember-its-file-in-the-customizer/#post-44269, so no media library is involved.

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