Task mission "Add print to the On Page Enter Event"

UI Builder
1

Application ID: 83EB274E-8C30-460A-BE26-C9EA54595CFA

Cannot read properties of undefined (reading 'meta')

TypeError: Cannot read properties of undefined (reading 'meta')
    at onSelect (https://develop.backendless.com/js/948.714d4a6f.js:1:19096)
    at onSelect (https://develop.backendless.com/js/bundle.90a089d0.js:1:2019705)
    at https://develop.backendless.com/js/bundle.90a089d0.js:1:2017464
    at ol (https://develop.backendless.com/js/common--react.202ab84b.js:2:278139)
    at Cu (https://develop.backendless.com/js/common--react.202ab84b.js:2:298269)
    at uu (https://develop.backendless.com/js/common--react.202ab84b.js:2:290570)
    at Bo (https://develop.backendless.com/js/common--react.202ab84b.js:2:231532)
    at https://develop.backendless.com/js/common--react.202ab84b.js:2:297071
    at Su (https://develop.backendless.com/js/common--react.202ab84b.js:2:297076)
    at au (https://develop.backendless.com/js/common--react.202ab84b.js:2:289573)

Problem description

Describe what you did in console that led to the error. Please provide a description of what actually happens. Be descriptive: “it doesn’t work” does not describe what the behavior actually is. This will help us with reproducing the problem.

Steps to reproduce

Please describe steps to reproduce starting from the first action.

2

Hello @Yaser_Bukhamseen!

Welcome to the community!

I accessed your application and the mission page opened without any errors.
Could you please specify when exactly you encounter this error so that we can assist you?

Regards,
Alexander

3

Hi dear Alex, I encountered the errors just now. I kept on trying to validate the task but it is giving me same error!

4

I have checked again, but I am not encountering the same error.
Could you please provide screenshots, or even better, record a video using a tool like Loom?
This would greatly help in speeding up the resolution of your issue.

Regards,
Alexander

5

I got same error as well when when I moved to the next task as I’m trying to do the on page scroll task.

Here is a screenshot of both errors

Screen Shot 2024-07-25 at 7.51.59 PM
Screen Shot 2024-07-25 at 7.51.59 PM1440Ă—900 39 KB

Screen Shot 2024-07-25 at 7.52.06 PM
Screen Shot 2024-07-25 at 7.52.06 PM1440Ă—900 35.9 KB

Screen Shot 2024-07-25 at 7.48.32 PM
Screen Shot 2024-07-25 at 7.48.32 PM1440Ă—900 119 KB

6

Thanks for the additional information!
This error is due to not following all the instructions, which is why the mission is not validating.
You need to display Hello World! instead of abc.
Please try changing the text and attempt the validation again.

If you have any further questions, feel free to reach out.

Regards,
Alexander

7

Hi dear Alex,

I follow the instructions provided by mission.

Here is the loom link for this:

Hope you can see where is the error so i can continue my learning path on mission. thanks

8

Thank you for recording the video, it was very helpful in understanding the issue, and I am very grateful to you.

The thing is, when you enter the text “Hello World!” in the print block, it is highlighted in yellow. This indicates that it is in edit mode and the changes have not yet been applied.

To apply the changes, you need to deselect the block (simply click elsewhere so that the highlight disappears).

You can also verify this by opening the Console tab in DevTools, your message should appear there.
I hope this helps.

Regards,
Alexander

9

Hi dear Alex,

Waw that was great!! It worked like magic man…I’m thrilled…

Thanks dude for your great help…

Best
Yaser

1 Like
10

Glad I could help!

Regards,
Alexander