STACK Error

STACK Error

Marco Cigna -
回帖数：6

Hi everyone,

When using the STACK plugin, the plugin breaks giving the following error

"Exception - property_exists(): Argument #1 ($object_or_class) must be of type object|string, null given"

I believe this to be a database issue but I am unable to track down the source of it. I've setup a fresh moodle instance and tested this, and it worked fine with a clean database. However, when testing on the dev site it causes this issue.

To recreate this I added another question in the following line:





Stack Trace:


Any help is greatly appreciated, spent a long time trying to debug this.

平均分： -
回复Marco Cigna

Re: STACK Error

Christopher Sangwin -
Particularly helpful Moodlers的头像 Plugin developers的头像
Ok, I know the problem: you've called a PRT the same name as the input. This should not matter, and the question you emailed me works fine on the latest release (I was confident we'd fixed this), but I think that's the underlying issue.

Chris
平均分： -
回复Christopher Sangwin

Re: STACK Error

Marco Cigna -
Hi Chris,

Could you please elaborate what this means? "you've called a PRT the same name as the input"

Is there something that can be done on our end to fix this?

Thanks!
平均分： -
回复Marco Cigna

Re: STACK Error

Michael Roberts -
Hi Marco and Chris,

I've encountered this error message also. It occurs when you are adding any new PRT to an existing STACK question, and it's occurring in Moodle 4.0.
平均分： -