Notices in the wp-json endpoint
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We updated from 2.4.2 to 2.8.0 and now see the following notices in our wp-json feed:
Warning: Invalid argument supplied for foreach() in /var/www/html/wp-includes/rest-api/fields/class-wp-rest-meta-fields.php on line 557
Warning: Invalid argument supplied for foreach() in /var/www/html/wp-includes/rest-api/fields/class-wp-rest-meta-fields.php on line 557
Warning: Invalid argument supplied for foreach() in /var/www/html/wp-includes/rest-api/fields/class-wp-rest-meta-fields.php on line 557
Warning: Cannot modify header information – headers already sent by (output started at /var/www/html/wp-includes/rest-api/fields/class-wp-rest-meta-fields.php:557) in /var/www/html/wp-includes/rest-api/class-wp-rest-server.php on line 1337
Warning: Cannot modify header information – headers already sent by (output started at /var/www/html/wp-includes/rest-api/fields/class-wp-rest-meta-fields.php:557) in /var/www/html/wp-includes/rest-api/class-wp-rest-server.php on line 1337`
This is on WordPress 5.4. Disabling the plugin resolves the issue.
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Thank you, Anderson. 2.8.1-beta.2 seems to have resolved the issue.
We are now running WordPress 5.5 and updating incrementally, but we also tested 2.8.1-beta.1 on a previous 5.4 instance that was initially displaying the errors. We had upgraded from 2.4.2 to 2.8.0 of the plugin and that is when the notices began appearing in the JSON feed.
One thing we found that was upgrading to 2.8.1-beta.1 on an instance that displayed the notices did not resolve the issue even with all other plugins disabled. However, a fresh WordPress installation with 2.8.1-beta.1 did not display the errors. We tried clearing out plugin data manually and via the option to remove plugin data during deactivation, but the notices always displayed in the feed on instances wherein 2.8.0 was activated previously. 2.8.1-beta.2 seems to have resolved the issue.
Thank you kindly for your support on this.
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