Critical Error On Featured Content Breaks Site

So …

If I am in a browser and I view a featured content page that I have created and then I use the ‘back button’ on the browser (any of them – FF, IE, Safari, Opera or Chrome (and I have all these installed and the latest versions)).

Then the whole featured content system breaks.

I get this error message.

So the error is as follows …

POST ERROR

e@http://raysphotos.uk/wp-includes/js/dist/media-utils.min.js?ver=1.2.4:1:5052
Ag@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:63:107
Vg@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:89:442
ph@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:217:70
lh@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:126:411
O@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:121:71
ze@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:118:14
mg/<@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:53:49
unstable_runWithPriority@http://raysphotos.uk/wp-includes/js/dist/vendor/react.min.js?ver=16.9.0:26:340
Ma@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:52:280
mg@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:52:498
V@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:52:431
Sb@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:213:96
Mg@http://raysphotos.uk/wp-includes/js/dist/vendor/react-dom.min.js?ver=16.9.0:85:82
t@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:19198
Tt/</e<@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:19283
o/<@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:15212
o@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:15184
K/y</<@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:13576
p@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:6765
a/</</<@http://raysphotos.uk/wp-includes/js/dist/redux-routine.min.js?ver=3.6.2:1:9535
I/</<@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:8752
A/</</<@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:9187
dispatch@http://raysphotos.uk/wp-includes/js/dist/data.min.js?ver=4.9.2:1:8484
i/<@http://raysphotos.uk/wp-includes/js/dist/redux-routine.min.js?ver=3.6.2:1:9181
e/<@http://raysphotos.uk/wp-includes/js/dist/redux-routine.min.js?ver=3.6.2:1:5078
e@http://raysphotos.uk/wp-includes/js/dist/redux-routine.min.js?ver=3.6.2:1:5053
u/<@http://raysphotos.uk/wp-includes/js/dist/redux-routine.min.js?ver=3.6.2:1:5007

POST TEXT

<!– wp:separator {“color”:”yellow”} –>
<hr class=”wp-block-separator has-text-color has-background has-yellow-background-color has-yellow-color”/>
<!– /wp:separator –>

<!– wp:columns –>
<div class=”wp-block-columns”><!– wp:column –>
<div class=”wp-block-column”><!– wp:image {“id”:1282,”sizeSlug”:”large”,”linkDestination”:”custom”} –>
<figure class=”wp-block-image size-large”></figure>
<!– /wp:image –>

<!– wp:paragraph –>
<p>DUXFORD</p>
<!– /wp:paragraph –></div>
<!– /wp:column –>

<!– wp:column –>
<div class=”wp-block-column”></div>
<!– /wp:column –>

<!– wp:column –>
<div class=”wp-block-column”></div>
<!– /wp:column –></div>
<!– /wp:columns –>

This theme is driving me up the wall!