Uncaught ReferenceError: jQuery is not defined

Hi All,

I have no JavaScript experience and was hoping this community can help me.

I use Divi Builder for all my sites and started experiencing issues where I cannot enable Visual Builder to edit my pages. I had been integrating Google Tag Manager on Friday and the site was fine but on Saturday the problem started. I updated Divi to the latest 4.9.3 version but still had the problem.

My web hosting checked my site and it looks like when I activate Divi Safe Mode I can access Visual Builder. They highlighted a list or errors that occur when Safe Mode is disabled. They are:

Error in Full
JQMIGRATE: Migrate is installed, version 3.3.2
VM2562:15 <link rel=preload> must have a valid `as` value
rt @ VM2562:15
jquery-migrate.min.js?ver=3.3.2:2 Uncaught ReferenceError: jQuery is not defined
    at jquery-migrate.min.js?ver=3.3.2:2
custom.unified.js?ver=4.9.3:8 Uncaught ReferenceError: jQuery is not defined
    at Object.<anonymous> (custom.unified.js?ver=4.9.3:8)
    at n (custom.unified.js?ver=4.9.3:1)
    at Module.<anonymous> (custom.unified.js?ver=4.9.3:47)
    at n (custom.unified.js?ver=4.9.3:1)
    at custom.unified.js?ver=4.9.3:1
    at custom.unified.js?ver=4.9.3:1
wp-util.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at wp-util.min.js?ver=5.7:2
wp-backbone.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at wp-backbone.min.js?ver=5.7:2
media-models.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at Object.23 (media-models.min.js?ver=5.7:2)
    at r (media-models.min.js?ver=5.7:2)
    at Object.22 (media-models.min.js?ver=5.7:2)
    at r (media-models.min.js?ver=5.7:2)
    at media-models.min.js?ver=5.7:2
    at media-models.min.js?ver=5.7:2
wp-plupload.min.js?ver=5.7:1 Uncaught ReferenceError: jQuery is not defined
    at wp-plupload.min.js?ver=5.7:1
core.min.js?ver=1.12.1:5 Uncaught ReferenceError: jQuery is not defined
    at core.min.js?ver=1.12.1:5
    at core.min.js?ver=1.12.1:5
mouse.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at mouse.min.js?ver=1.12.1:9
    at mouse.min.js?ver=1.12.1:9
sortable.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at sortable.min.js?ver=1.12.1:9
    at sortable.min.js?ver=1.12.1:9
mediaelement-migrate.min.js?ver=5.7:1 Uncaught ReferenceError: jQuery is not defined
    at mediaelement-migrate.min.js?ver=5.7:1
wp-mediaelement.min.js?ver=5.7:1 Uncaught ReferenceError: jQuery is not defined
    at wp-mediaelement.min.js?ver=5.7:1
api-request.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at api-request.min.js?ver=5.7:2
media-views.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at Object.<anonymous> (media-views.min.js?ver=5.7:2)
    at o (media-views.min.js?ver=5.7:2)
    at Object.<anonymous> (media-views.min.js?ver=5.7:2)
    at o (media-views.min.js?ver=5.7:2)
    at media-views.min.js?ver=5.7:2
    at media-views.min.js?ver=5.7:2
media-editor.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at media-editor.min.js?ver=5.7:2
media-audiovideo.min.js?ver=5.7:2 Uncaught TypeError: Cannot set property 'mixin' of undefined
    at Object.<anonymous> (media-audiovideo.min.js?ver=5.7:2)
    at o (media-audiovideo.min.js?ver=5.7:2)
    at Object.<anonymous> (media-audiovideo.min.js?ver=5.7:2)
    at o (media-audiovideo.min.js?ver=5.7:2)
    at media-audiovideo.min.js?ver=5.7:2
    at media-audiovideo.min.js?ver=5.7:2
media-library.js?ver=4.9.3:1 Uncaught TypeError: Cannot read property 'view' of undefined
    at media-library.js?ver=4.9.3:1
draggable.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at draggable.min.js?ver=1.12.1:9
    at draggable.min.js?ver=1.12.1:9
slider.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at slider.min.js?ver=1.12.1:9
    at slider.min.js?ver=1.12.1:9
jquery.ui.touch-punch.js?ver=0.2.2:10 Uncaught ReferenceError: jQuery is not defined
    at jquery.ui.touch-punch.js?ver=0.2.2:10
iris.min.js?ver=5.7:5 Uncaught ReferenceError: jQuery is not defined
    at iris.min.js?ver=5.7:5
color-picker.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at color-picker.min.js?ver=5.7:2
wp-color-picker-alpha.min.js?ver=4.9.3:8 Uncaught ReferenceError: jQuery is not defined
    at wp-color-picker-alpha.min.js?ver=4.9.3:8
mce-view.min.js?ver=5.7:2 Uncaught TypeError: Cannot read property 'template' of undefined
    at mce-view.min.js?ver=5.7:2
    at mce-view.min.js?ver=5.7:2
jquery.visible.min.js?ver=4.9.3:23 Uncaught ReferenceError: jQuery is not defined
    at jquery.visible.min.js?ver=4.9.3:23
common.js?ver=4.9.3:5 Uncaught ReferenceError: jQuery is not defined
    at common.js?ver=4.9.3:5
tabs.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at tabs.min.js?ver=1.12.1:9
    at tabs.min.js?ver=1.12.1:9
jquery.form.min.js?ver=4.2.1:1 Uncaught ReferenceError: jQuery is not defined
    at jquery.form.min.js?ver=4.2.1:1
    at jquery.form.min.js?ver=4.2.1:1
core.js?ver=4.9.3:13 Uncaught ReferenceError: jQuery is not defined
    at core.js?ver=4.9.3:13
portability.js?ver=4.9.3:37 Uncaught ReferenceError: jQuery is not defined
    at portability.js?ver=4.9.3:37
resizable.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at resizable.min.js?ver=1.12.1:9
    at resizable.min.js?ver=1.12.1:9
effect.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at effect.min.js?ver=1.12.1:9
    at effect.min.js?ver=1.12.1:9
datepicker.min.js?ver=1.12.1:9 Uncaught ReferenceError: jQuery is not defined
    at datepicker.min.js?ver=1.12.1:9
    at datepicker.min.js?ver=1.12.1:9
jquery-ui-timepicker-addon.js?ver=4.9.3:193 Uncaught ReferenceError: jQuery is not defined
    at jquery-ui-timepicker-addon.js?ver=4.9.3:193
heartbeat.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at heartbeat.min.js?ver=5.7:2
VM2562:15 Uncaught TypeError: Cannot read property '_data' of undefined
    at HTMLScriptElement.post (<anonymous>:15:27852)
jquery.tablesorter.min.js?ver=4.9.3:23 Uncaught ReferenceError: jQuery is not defined
    at jquery.tablesorter.min.js?ver=4.9.3:23
VM2562:15 Uncaught TypeError: Cannot read property 'guid' of undefined
    at et (<anonymous>:15:29287)
    at ut (<anonymous>:15:30258)
    at Object.s.addEvent (chart.min.js?ver=4.9.3:10)
    at chart.min.js?ver=4.9.3:10
    at chart.min.js?ver=4.9.3:10
helpers-page-16177096843091.js?ver=4.9.3:1 Uncaught ReferenceError: jQuery is not defined
    at helpers-page-16177096843091.js?ver=4.9.3:1
definitions-page-16177096844847.js?ver=4.9.3:1 Uncaught ReferenceError: jQuery is not defined
    at definitions-page-16177096844847.js?ver=4.9.3:1
bundle.js?ver=4.9.3:1 Uncaught TypeError: e is not a function
    at Module.<anonymous> (bundle.js?ver=4.9.3:1)
    at Module.<anonymous> (bundle.js?ver=4.9.3:1)
    at a (bundle.js?ver=4.9.3:1)
    at Object.<anonymous> (bundle.js?ver=4.9.3:1)
    at a (bundle.js?ver=4.9.3:1)
    at Object.<anonymous> (bundle.js?ver=4.9.3:1)
    at Object.<anonymous> (bundle.js?ver=4.9.3:1)
    at a (bundle.js?ver=4.9.3:1)
    at Object.<anonymous> (bundle.js?ver=4.9.3:1)
    at a (bundle.js?ver=4.9.3:1)
failure_notice.js?ver=4.9.3:1 Uncaught ReferenceError: jQuery is not defined
    at Object.<anonymous> (failure_notice.js?ver=4.9.3:1)
    at n (failure_notice.js?ver=4.9.3:1)
    at Object.<anonymous> (failure_notice.js?ver=4.9.3:1)
    at n (failure_notice.js?ver=4.9.3:1)
    at failure_notice.js?ver=4.9.3:1
    at failure_notice.js?ver=4.9.3:1
wp-auth-check.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at wp-auth-check.min.js?ver=5.7:2
VM2562:15 Uncaught TypeError: Cannot read property '_data' of undefined
    at HTMLScriptElement.post (<anonymous>:15:27577)
autosave.min.js?ver=5.7:2 Uncaught ReferenceError: jQuery is not defined
    at autosave.min.js?ver=5.7:2
VM2562:15 Uncaught TypeError: Cannot read property 'fn' of undefined
    at HTMLDocument.pt (<anonymous>:15:31932)
    at boot.js?ver=4.9.3:1

If anyone can help it would be highly appreciated as I do not understand what this code means.

Many thanks in advance