[SOLVED] WYSIWYG Editor missing

Hi everyone, after upgrade opencart from v1.5.6.4 to v2.3.0.2, my WYSIWYG Editor in product page are missing.
And also in image tab, after click the image should be showing the "edit" and "delete" button, but mine is jump to admin login page, and said "invalid token session. Please login again" .

Can anyone help ? Thank you.

Looks like your summernote editor isnt working properly.

You should have a folder called "summernote" in admin/view/javascript/

Check to make sure all files were uploaded

cyclops12 wrote:Looks like your summernote editor isnt working properly.

You should have a folder called "summernote" in admin/view/javascript/

Check to make sure all files were uploaded

Thank you for your reply.
I checked the ""summernote" in admin/view/javascript/, and re-upload again, still cannot.

Problem isn't with files, but with editor not being initialized. If you're familiar with Firebug or browser's object inspector, you can open it and then load the page with editor. There might be a JS error, which breaks other scripts.

If there're no JS errors, then most likely editor is not properly initialized, which is a little weird, because it's a product page. Try to clean every possible cache. OpenCart, browser etc.

After cache clear I did CTRL + F5. It did the job