What kind of mistake is this" Can't read style of null"

Question

Pls Help me

Answer 1

1- Link your code and give more details.
2- Use the search bar before asking to avoid duplicates.
3- Maybe this helps:
https://www.sololearn.com/post/90825/?ref=app
4- You have been posting irrelevant answers (spam) in the Questions and Answers Discuss section. The community guidelines have been already shown to you. If you keep behaving like that you could be reported to the moderators and get banned. I hope you understand.

Answer 2

Yes thanks it helped