Can’t access Visual Editor, only Text Editor

I have exactly same problem
Please any one have solution for this issue.

• This reply was modified 6 years, 2 months ago by Moath Hussein.

Other else JQuery not working

Yeah, that usually means there are js errors on the page. To find out what’s causing them look in the browser tools, then copy any js errors and paste them here. Will try to figure out where they are coming from.

Uncaught SyntaxError: missing ) after argument list
post-new.php:642 Uncaught ReferenceError: _ is not defined
at post-new.php:642
(anonymous) @ post-new.php:642
post-new.php:649 Uncaught ReferenceError: moment is not defined
at post-new.php:649
(anonymous) @ post-new.php:649
post-new.php:653 Uncaught ReferenceError: wp is not defined
at post-new.php:653
at post-new.php:653
(anonymous) @ post-new.php:653
(anonymous) @ post-new.php:653
post-new.php:657 Uncaught ReferenceError: wp is not defined
at post-new.php:657
(anonymous) @ post-new.php:657
post-new.php:667 Uncaught ReferenceError: wp is not defined
at post-new.php:667
at post-new.php:667
(anonymous) @ post-new.php:667
(anonymous) @ post-new.php:667
post-new.php:676 Uncaught ReferenceError: wp is not defined
at post-new.php:676
at post-new.php:679
(anonymous) @ post-new.php:676
(anonymous) @ post-new.php:679
post-new.php:683 Uncaught ReferenceError: wp is not defined
at post-new.php:683
at post-new.php:683
(anonymous) @ post-new.php:683
(anonymous) @ post-new.php:683
post-new.php:701 Uncaught ReferenceError: wp is not defined
at post-new.php:701
(anonymous) @ post-new.php:701
post-new.php:705 Uncaught ReferenceError: wp is not defined
at post-new.php:705
(anonymous) @ post-new.php:705
post-new.php:713 Uncaught ReferenceError: wp is not defined
at post-new.php:713
(anonymous) @ post-new.php:713
post-new.php:721 Uncaught ReferenceError: wp is not defined
at post-new.php:721
(anonymous) @ post-new.php:721
post-new.php:729 Uncaught ReferenceError: wp is not defined
at post-new.php:729
(anonymous) @ post-new.php:729
post-new.php:737 Uncaught TypeError: Cannot read property ‘editor’ of undefined
at post-new.php:737
(anonymous) @ post-new.php:737
post-new.php:741 Uncaught ReferenceError: wp is not defined
at post-new.php:741
(anonymous) @ post-new.php:741
post-new.php:747 Uncaught ReferenceError: wp is not defined
at post-new.php:747
(anonymous) @ post-new.php:747
post-new.php:754 Uncaught ReferenceError: wp is not defined
at post-new.php:754
(anonymous) @ post-new.php:754
post-new.php:5445 Uncaught ReferenceError: tinymce is not defined
at post-new.php:5445
(anonymous) @ post-new.php:5445
wp-langs-en.js?ver=4800-20180716-tadv-4.8.2:235 Uncaught ReferenceError: tinyMCE is not defined
at wp-langs-en.js?ver=4800-20180716-tadv-4.8.2:235
at wp-langs-en.js?ver=4800-20180716-tadv-4.8.2:519
(anonymous) @ wp-langs-en.js?ver=4800-20180716-tadv-4.8.2:235
(anonymous) @ wp-langs-en.js?ver=4800-20180716-tadv-4.8.2:519
post-new.php:5514 Uncaught ReferenceError: tinymce is not defined
at Object.load_ext (post-new.php:5514)
at post-new.php:5520
load_ext @ post-new.php:5514
(anonymous) @ post-new.php:5520
jquery-migrate.min.js:2 JQMIGRATE: Migrate is installed, version 1.4.1
keycodes.min.js:1 Uncaught TypeError: Cannot read property ‘mapValues’ of undefined
at Module.325 (keycodes.min.js:1)
at r (keycodes.min.js:1)
at wp.keycodes.1 (keycodes.min.js:1)
at keycodes.min.js:1
325 @ keycodes.min.js:1
r @ keycodes.min.js:1
wp.keycodes.1 @ keycodes.min.js:1
(anonymous) @ keycodes.min.js:1
data.min.js:1 Uncaught TypeError: Cannot read property ‘flowRight’ of undefined
at Module.308 (data.min.js:1)
at r (data.min.js:1)
at wp.data.0 (data.min.js:1)
at data.min.js:1
308 @ data.min.js:1
r @ data.min.js:1
wp.data.0 @ data.min.js:1
(anonymous) @ data.min.js:1
rich-text.min.js:1 Uncaught TypeError: Cannot read property ‘combineReducers’ of undefined
at Module.307 (rich-text.min.js:1)
at r (rich-text.min.js:1)
at wp.richText.0 (rich-text.min.js:1)
at rich-text.min.js:1
307 @ rich-text.min.js:1
r @ rich-text.min.js:1
wp.richText.0 @ rich-text.min.js:1
(anonymous) @ rich-text.min.js:1
compose.min.js:1 Uncaught TypeError: Cannot read property ‘upperFirst’ of undefined
at compose.min.js:1
at Module.<anonymous> (components.min.js:19)
at n (components.min.js:1)
at components.min.js:1
at components.min.js:1
(anonymous) @ compose.min.js:1
(anonymous) @ components.min.js:19
n @ components.min.js:1
(anonymous) @ components.min.js:1
(anonymous) @ components.min.js:1
annotations.min.js:1 Uncaught TypeError: Cannot read property ‘registerStore’ of undefined
at Module.314 (annotations.min.js:1)
at e (annotations.min.js:1)
at wp.annotations.1 (annotations.min.js:1)
at annotations.min.js:1
314 @ annotations.min.js:1
e @ annotations.min.js:1
wp.annotations.1 @ annotations.min.js:1
(anonymous) @ annotations.min.js:1
compose.min.js:1 Uncaught TypeError: Cannot read property ‘flowRight’ of undefined
at Module.compose (compose.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-930.min.js:1)
at t (commons-930.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-930.min.js:1)
at t (commons-930.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-930.min.js:1)
at t (commons-930.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-930.min.js:1)
at t (commons-930.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-930.min.js:1)
(anonymous) @ compose.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
t @ commons-930.min.js:1
window.yoastWebpackJsonp @ commons-930.min.js:1
(anonymous) @ wp-seo-post-scraper-930.min.js:1
wp-backbone.min.js:1 Uncaught TypeError: _.pluck is not a function
at wp.Backbone.Subviews.detach (wp-backbone.min.js:1)
at n.render (wp-backbone.min.js:1)
at n.render (media-views.min.js:2)
at HTMLDocument.init (media-editor.min.js:1)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at Function.ready (jquery.js:2)
at HTMLDocument.K (jquery.js:2)
detach @ wp-backbone.min.js:1
render @ wp-backbone.min.js:1
render @ media-views.min.js:2
init @ media-editor.min.js:1
i @ jquery.js:2
fireWith @ jquery.js:2
ready @ jquery.js:2
K @ jquery.js:2
injection.js:1 24:27.895@https://www.asu.edu.bh/wp-admin/post-new.php:content script injected
injection.js:1 24:27.923@https://www.asu.edu.bh/wp-admin/post-new.php:session name : rebest2012_injected1545542381608
injection.js:1 24:27.923@https://www.asu.edu.bh/wp-admin/post-new.php:content script hasn’t injected before.
injection.js:1 24:27.930@https://www.asu.edu.bh/wp-admin/post-new.php:result: {}
wp-auth-check.min.js:1 Uncaught TypeError: Cannot read property ‘hasClass’ of undefined
at HTMLDocument.<anonymous> (wp-auth-check.min.js:1)
at HTMLDocument.dispatch (jquery.js:3)
at HTMLDocument.r.handle (jquery.js:3)
at Object.trigger (jquery.js:3)
at Object.a.event.trigger (jquery-migrate.min.js:2)
at HTMLDocument.<anonymous> (jquery.js:3)
at Function.each (jquery.js:2)
at a.fn.init.each (jquery.js:2)
at a.fn.init.trigger (jquery.js:3)
at Object.<anonymous> (heartbeat.min.js:1)
(anonymous) @ wp-auth-check.min.js:1
dispatch @ jquery.js:3
r.handle @ jquery.js:3
trigger @ jquery.js:3
a.event.trigger @ jquery-migrate.min.js:2
(anonymous) @ jquery.js:3
each @ jquery.js:2
each @ jquery.js:2
trigger @ jquery.js:3
(anonymous) @ heartbeat.min.js:1
i @ jquery.js:2
fireWith @ jquery.js:2
y @ jquery.js:4
c @ jquery.js:4
XMLHttpRequest.send (async)
send @ jquery.js:4
ajax @ jquery.js:4
j @ heartbeat.min.js:1
k @ heartbeat.min.js:1
m @ heartbeat.min.js:1
n @ heartbeat.min.js:1
(anonymous) @ heartbeat.min.js:1
dispatch @ jquery.js:3
r.handle @ jquery.js:3

I seem to have the same problem. The classic editor will not allow me to use the visual editing view. I do not like the Text View or the block view. For now you have me in a position where I can’t post to my blog. Need some help here.
Thanks.

Same here.
After I received updates whole dependencies are broken down I’m not getting any data on editor nor able to shift to the visual editor.

Errors are below :

Uncaught TypeError: Object(…) is not a function
at Module.308 (data.min.js:1)
at r (data.min.js:1)
at wp.data.0 (data.min.js:1)
at data.min.js:1
post.php:227 Uncaught TypeError: Cannot read property ‘use’ of undefined
at post.php:227
at post.php:229
moment.min.js:1 Deprecation warning: use moment.updateLocale(localeName, config) to change an existing locale. moment.defineLocale(localeName, config) should only be used for creating a new locale See https://momentjs.com/guides/#/warnings/define-locale/ for more info.
Y @ moment.min.js:1
keycodes.min.js:1 Uncaught TypeError: Object(…) is not a function
at Module.325 (keycodes.min.js:1)
at r (keycodes.min.js:1)
at wp.keycodes.1 (keycodes.min.js:1)
at keycodes.min.js:1
rich-text.min.js:1 Uncaught TypeError: Cannot read property ‘combineReducers’ of undefined
at Module.307 (rich-text.min.js:1)
at r (rich-text.min.js:1)
at wp.richText.0 (rich-text.min.js:1)
at rich-text.min.js:1
compose.min.js:1 Uncaught TypeError: Object(…) is not a function
at compose.min.js:1
at Module.<anonymous> (components.min.js:19)
at n (components.min.js:1)
at components.min.js:1
at components.min.js:1
load-scripts.php:393 Uncaught TypeError: Cannot read property ‘memoize’ of undefined
at load-scripts.php:393
at load-scripts.php:393
wp-seo-post-scraper-921.min.js:1 Uncaught TypeError: Cannot read property ‘withSelect’ of undefined
at Object.<anonymous> (wp-seo-post-scraper-921.min.js:1)
at t (commons-921.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-921.min.js:1)
at t (commons-921.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-921.min.js:1)
at t (commons-921.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-921.min.js:1)
at t (commons-921.min.js:1)
at Object.<anonymous> (wp-seo-post-scraper-921.min.js:1)
at t (commons-921.min.js:1)
main.js:41 Uncaught TypeError: Cannot read property ‘defaults’ of undefined
at add_filter (main.js:41)
at date.js:205
stock-photos.min.js:1 Uncaught TypeError: Cannot read property ‘model’ of undefined
at Object.1 (stock-photos.min.js:1)
at e (stock-photos.min.js:1)
at stock-photos.min.js:1
at Object.2../stock-photos-query (stock-photos.min.js:1)
at e (stock-photos.min.js:1)
at stock-photos.min.js:1
at Object.3../models/stock-photos.js (stock-photos.min.js:1)
at e (stock-photos.min.js:1)
at a (stock-photos.min.js:1)
at stock-photos.min.js:1
utils.js:11 Uncaught ReferenceError: Backbone is not defined
at utils.js:11
dialog-view.js:3 Uncaught ReferenceError: Backbone is not defined
at dialog-view.js:3
toolset-bs-component-events.js:205 Uncaught TypeError: Cannot read property ‘defer’ of undefined
at HTMLDocument.<anonymous> (toolset-bs-component-events.js:205)
at i (load-scripts.php:2)
at Object.fireWith [as resolveWith] (load-scripts.php:2)
at Function.ready (load-scripts.php:2)
at HTMLDocument.K (load-scripts.php:2)

Could the problem for some people be related to a conflict with the Yoast Seo plugin?

Here is another person having that problem:
https://www.ads-software.com/support/topic/classic-editor-does-not-work-for-me/

Its likely that the conflict will be solved in the New Year but was left unsolved for now due to the holidays.

We were seeing console errors similar to what gig397 posted. We network-deactivated Yoast SEO and they went away.

Oddly, reactivating Yoast on specific sites doesn’t seem to make the problem recur; we’re still researching that.

I get the same here.
Even though I don’t have ANY plugin activated, not even the “Classic Editor”.
The console gives this:

wp-mediaelement.min.js?ver=5.0.3:1 Uncaught TypeError: b(...).not(...).filter(...).mediaelementplayer is not a function
    at HTMLDocument.a (wp-mediaelement.min.js?ver=5.0.3:1)
    at fire (jquery-1.10.2.js:3048)
    at Object.fireWith [as resolveWith] (jquery-1.10.2.js:3160)
    at Function.ready (jquery-1.10.2.js:433)
    at HTMLDocument.completed (jquery-1.10.2.js:104)

SOLVED.

In my case conflicting jQuery versions loaded cumulatively were to blame.