GraphQL error: Cannot read property 'updated' of undefined

[lnoel-everlaw]

Describe the bug
When editing a page, I click save and am prompted with: GraphQL error: Cannot read property 'updated' of undefined. Then, when closing the page (immediately after hitting save), the Discard Unsaved Changes? alert is displayed. I click Discard unsaved changes, and yet changes from the editing session are still persisted.

I was able to use the site and edit pages as expected for 2 days before this issue arose.

To Reproduce
Steps to reproduce the behavior:
???

1. Edit a page.
2. Click 'save'
3. Click 'close'

Screenshots

Host Info (please complete the following information):

• OS: Ubuntu 18.04 running on EC2
• Wiki.js version: e.g. 2.0.0-beta.303
• Database engine: postgres 10.10

[andrefantinato]

Same error!

[fireundubh]

I also get this warning but without the GraphQL prefix:

[MASTER] warn: Cannot read property 'updated' of undefined

Fresh install and 1.x import. Same behavior as reporter described, but the steps are just "edit page, try to save." No need to click close.

I also get this warning:

[MASTER] warn: Cannot read property 'created' of undefined

That's when creating a new page.

[fireundubh]

This issue seems to only occur (for me) when running Wiki.js as a service. When running with node server start, Wiki.js doesn't emit these warnings.

[fireundubh]

I narrowed this down further.

• When NODE_ENV is set to production, the issue occurs.
• When NODE_ENV is set to development, everything works normally.

This suggests that when NODE_ENV is set to development, some object is being initialized or persisted that needs to be initialized or persisted when NODE_ENV is set to production.

[ramirahikkala]

I get the same error as fireundubh on Linux Mint 18.2 Sonya with wiki.js 2.1.113.
The error comes while saving the page.

[jdanderson3]

I can confirm fireundubh's experience.
Starting the wiki.js with NODE_ENV-development works perfectly,
but when I start with NODE_ENV=production I cannot save any page. I get "GraphQL error: Cannot read property 'updated' of undefined" then an infinite box saying it is Rendering.

Centos 7.7
Wiki.js 2.1.114
postgresql-server-9.2.24

[jdanderson3]

For me, upgrading to wiki.js 2.2.51 solved this problem.