Warning: array_merge() [function.array-merge]: Argument #2 is not an array

  • Hey all,
    PHP problem. Tried to isolate it, but not PHP savvy enough.
    Doing maintenance on a clients site, and noticed she had a warning across the top of her site. I did not create the theme, just doing some maintenance to it.

    The address is https://www.temeculamaternityphotographer.com/ you can see the warning across the top of the page.

    The warning is calling out line 324 in classes.php.
    Below is line 324:
    $headers = array_merge($headers, wp_get_nocache_headers());

    Any help? Thanks.

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