Cannot edit Sharepoint 2013 wiki

We have a collection of wikis. A few of the documents can no longer be edited. When you click on Edit Page, the wiki does not get the line around it and it is not editable. The tools are greyed out. It does get the yellow bar across the top that says "Status: Checked out and editable." But it is not. And when you check it back in it returns an error: "Sorry something went wrong. An unexpected error has occurred."

In IE 11 I watched the scripts and when Edit page is clicked an exception is thrown:
Unable to set property 'ListId' of undefined or null reference

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

IsaacSharePoint Client Side DeveloperCommented:
Have you tried it in other browsers?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
gglollcAuthor Commented:
Yes, the latest version of Mozzilla. Same result.
Walter CurtisSharePoint AEDCommented:
Have a similar issue on various pages, not just wiki pages and somewhat sporadically. My work around is to explicitly check out the page first, then go to edit mode and it seems to work every time.

Hope that helps...
Active Protection takes the fight to cryptojacking

While there were several headline-grabbing ransomware attacks during in 2017, another big threat started appearing at the same time that didn’t get the same coverage – illicit cryptomining.

gglollcAuthor Commented:
Unfortunately that didn't work on our pages.
Veronique PalmerFounder and CEOCommented:
Maybe the wiki has become corrupted somehow.  Maybe copy / paste the text into a new wiki and delete the old one?
Walter CurtisSharePoint AEDCommented:
Information provided is accurate and correct.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SharePoint

From novice to tech pro — start learning today.