I have a form with multiple page breaks that creates a post and one of the Custom fields is of Checkbox type. When moving from the page containing the checkbox custom filed I get this message:
Warning: hash_hmac() expects parameter 2 to be string, array given in /xxx/xxx/xxx/xxx/xxx/wp-includes/pluggable.php on line 1465
And when I submit, I get this error:
Warning: Invalid argument supplied for foreach() in /xxx/xxx/xxx/xxx/xxx/wp-content/plugins/gravityforms/common.php on line 3654
Now in the dashboard when viewing the post, the custom fields are added but their value is "Array" and their number seems to be random, meaning if I have checked 4 boxes in the form, in the post are added just 2 or 1 or other random number less than the 4 that they should be.
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