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    <p>I didn't see an answer so I'll try out some ideas</p>
    <p>1st off, as you noticed you should watch your versions -- php and
      wordpress, many hosts will do automatic updated on WP, most not on
      PHP (esp 5.x to 7.x)<br>
      A version update could cause a previously allowed <span
        style="color:rgb(0,0,0);font-family:"Times New
        Roman";font-size:medium">argument case to be downgraded and
        so trigger a warning. <br>
        Since it sounds like some post are not showing, it is more a
        problem then annoying, you can deal with </span><span
        style="color:rgb(0,0,0);font-family:"Times New
        Roman";font-size:medium"><span
          style="color:rgb(0,0,0);font-family:"Times New
          Roman";font-size:medium">annoying </span>by turning off
        warnings - usually in php.ini.<br>
        <br>
        You said you updated WP and plugins, and themes -- themes seems
        suspects - esp since the issue is with post-custom-meta<br>
        It sounds like the theme is using a custom-meta value that is
        not handled right even with the upgrade.<br>
        <br>
        I'd look closer at the theme, esp since it old and that the
        update is handling the meta right.<br>
        Esp since the mac vs PC difference - it really looks a version
        issue and possible with older code vs html5</span></p>
    <p><span style="color:rgb(0,0,0);font-family:"Times New
        Roman";font-size:medium">Can't really do more with a direct
        look at the server -- next step is to have it gone over by
        whoever setup the combination originally</span></p>
    <p><span style="color:rgb(0,0,0);font-family:"Times New
        Roman";font-size:medium">Rich<br>
      </span></p>
    <div class="moz-cite-prefix">On 8/15/2020 11:31 AM, Shel Horowitz
      via Hidden-discuss wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CADG-Mh1OiT5ecwKFiG8BDqDMS874t_vhn259u9k3nmhTjnP+KQ@mail.gmail.com">
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      <div dir="ltr">I don't know what's going on. I tried to write a
        new blog post in chrome on my Mac. It would not accept the
        photo I wanted to use, did not show my category list, but
        claimed the post was published. I figured I'd go into the Edge
        browser on my PC and add the graphic and categories. When I got
        to the PC, it asked me to upgrade my WordPress to 5.5 (I didn't
        get this message on the Mac). I did this and also updated my
        plugins and themes.
        <div><br>
        </div>
        <div>The post did not show up at all, and I ended up recreating
          it by copying it from the Mac into a text file and emailing
          the file to myself so I could do the post again on the PC. </div>
        <div><br>
        </div>
        <div>I was able to do the graphic and my categories list showed
          up normally. When I hit post, I got this screen, and I have no
          clue what this means:</div>
        <div><br>
        </div>
        <div><br style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <b style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">Warning</b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">: array_key_exists(): The
            first argument should be either a string or an integer in </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">/home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php"
              moz-do-not-send="true">greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php</a></b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium"> on line </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">227</b><br
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            Roman";font-size:medium">
          <br style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <b style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">Warning</b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">: array_key_exists(): The
            first argument should be either a string or an integer in </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">/home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php"
              moz-do-not-send="true">greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php</a></b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium"> on line </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">227</b><br
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <br style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <b style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">Warning</b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">: Cannot modify header
            information - headers already sent by (output started at
            /home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227"
              moz-do-not-send="true">greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227</a>)
            in </span><b style="color:rgb(0,0,0);font-family:"Times
            New Roman";font-size:medium">/home2/shelhoro/public_html/<a
              href="http://greenandprofitable.com/wp-admin/post.php"
              moz-do-not-send="true">greenandprofitable.com/wp-admin/post.php</a></b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium"> on line </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">231</b><br
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <br style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <b style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">Warning</b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">: Cannot modify header
            information - headers already sent by (output started at
            /home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227"
              moz-do-not-send="true">greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227</a>)
            in </span><b style="color:rgb(0,0,0);font-family:"Times
            New Roman";font-size:medium">/home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-includes/pluggable.php"
              moz-do-not-send="true">greenandprofitable.com/wp-includes/pluggable.php</a></b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium"> on line </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">1296</b><br
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <br style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">
          <b style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">Warning</b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">: Cannot modify header
            information - headers already sent by (output started at
            /home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227"
              moz-do-not-send="true">greenandprofitable.com/wp-content/themes/responsive/core/includes/post-custom-meta.php:227</a>)
            in </span><b style="color:rgb(0,0,0);font-family:"Times
            New Roman";font-size:medium">/home2/shelhoro/public_html/<a
href="http://greenandprofitable.com/wp-includes/pluggable.php"
              moz-do-not-send="true">greenandprofitable.com/wp-includes/pluggable.php</a></b><span
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium"> on line </span><b
            style="color:rgb(0,0,0);font-family:"Times New
            Roman";font-size:medium">1299</b>  </div>
        <div><br>
        </div>
        <div>The post DID show up as published, although with a generic
          WordPress look and feel, not the usual skin that my blog posts
          have. This is the new post: <a
href="https://greenandprofitable.com/building-a-ladder-for-new-nonviolent-activists/"
            moz-do-not-send="true">https://greenandprofitable.com/building-a-ladder-for-new-nonviolent-activists/</a></div>
        <div><br>
        </div>
        <div>The two of my older posts I checked also lost their skin.
          They are all supposed to have a green background that goes
          with my site. It's not a big deal, but I'd like it to go back
          to normal.</div>
        <div><br>
        </div>
        <div>I went back to the wp-admin window on the Mac to see what
          would happen if I brought up an older post. Only two posts
          show up when I click "all posts": the one I just reposted from
          the PC, and a post about Ireland from 2014. This blog has been
          active since 2004 and has hundreds of posts. On the PC, all
          the posts are there--but I've lost the ability to reply to or
          edit comments. And I notice in the Dashboard page that it
          wants yet another PHP update (seems like I did one not very
          long ago).</div>
        <div><br>
        </div>
        <div>What do I need to do? Advice very much appreciated, as
          always.</div>
        <div><br clear="all">
          <div>
            <div dir="ltr" class="gmail_signature"
              data-smartmail="gmail_signature">
              <div dir="ltr">
                <div>
                  <div dir="ltr">
                    <div dir="ltr">
                      <div dir="ltr">
                        <div>Shel Horowitz - "The Transformpreneur"</div>
                        <div>________________________________________________</div>
                        <div>Contact me to bake in profitability while
                          addressing hunger, </div>
                        <div>poverty, war, and catastrophic climate
                          change</div>
                        <div>* First business ever to be Green America
                          Gold Certified</div>
                        <div>* Inducted into the National Environmental
                          Hall of Fame</div>
                        <div>* Certified speaker: International Platform
                          Association</div>
                        <div><a
                            href="http://goingbeyondsustainability.com"
                            target="_blank" moz-do-not-send="true">http://goingbeyondsustainability.com</a> </div>
                        <div>mailto:<a
                            href="mailto:shel@greenandprofitable.com"
                            target="_blank" moz-do-not-send="true">shel@greenandprofitable.com</a>
                          413-586-2388</div>
                        <div>Award-winning, best-selling author of 10
                          books. </div>
                        <div>Latest:Guerrilla Marketing to Heal the
                          World </div>
                        <div>(co-authored with Jay Conrad Levinson)</div>
                        <div><br>
                        </div>
                        <div>Watch my TEDx Talk,</div>
                        <div>"Impossible is a Dare: Business for a
                          Better World"</div>
                        <div><a
                            href="http://www.ted.com/tedx/events/11809"
                            target="_blank" moz-do-not-send="true">http://www.ted.com/tedx/events/11809</a> </div>
                        <div>(move your mouse to "event videos")</div>
                        <div>_________________________________________________</div>
                        <div><br>
                        </div>
                      </div>
                    </div>
                  </div>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
Hidden-discuss mailing list - home page: <a class="moz-txt-link-freetext" href="http://www.hidden-tech.net">http://www.hidden-tech.net</a>
<a class="moz-txt-link-abbreviated" href="mailto:Hidden-discuss@lists.hidden-tech.net">Hidden-discuss@lists.hidden-tech.net</a>

You are receiving this because you are on the Hidden-Tech Discussion list.
If you would like to change your list preferences, Go to the Members
page on the Hidden Tech Web site.
<a class="moz-txt-link-freetext" href="http://www.hidden-tech.net/members">http://www.hidden-tech.net/members</a>
</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Rich Roth
CEO TnR Global

Bio and personal blog: <a class="moz-txt-link-freetext" href="http://rizbang.com">http://rizbang.com</a>
Building the really big sites:      <a class="moz-txt-link-freetext" href="http://www.tnrglobal.com">http://www.tnrglobal.com</a>
Small/Soho business in the PV:        <a class="moz-txt-link-freetext" href="http://www.hidden-tech.net">http://www.hidden-tech.net</a>
Places to meet for business:        <a class="moz-txt-link-freetext" href="http://www.meetmewhere.com">http://www.meetmewhere.com</a>
And for Arts and relaxation:
<a class="moz-txt-link-freetext" href="http://TarotMuertos.com">http://TarotMuertos.com</a> - Artistic Tarot Deck
   <a class="moz-txt-link-freetext" href="http://www.welovemuseums.com">http://www.welovemuseums.com</a>
   <a class="moz-txt-link-freetext" href="http://www.artonmytv.com/">http://www.artonmytv.com/</a>
Helping move the world:             <a class="moz-txt-link-freetext" href="http://www.earththrives.com">http://www.earththrives.com</a></pre>
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