Widget is null in Blueprint

[nauq.302 (Nguyễn Minh Quân)]

My Health Bar widget is shown when I play game.

But it is not valid in blueprint check.

Please help!!!
Thank you all

[Everynone]

So this prints when you start the game?

And this prints when you actually play?

Or it does working when you PIE.

[nauq.302 (Nguyễn Minh Quân)]

Yes, when I play it’s print “Null on init” when I start the game and “Null HealthBar” every time Health changed

[Everynone]

Can you try this node instead:

[nauq.302 (Nguyễn Minh Quân)]

I tried but nothing changed

[Everynone]

Can you give it a try in a clean project, just to test it out? One way to figure out whether this is an engine bug or project related issue - something that can be cause by a rogue plugin?

[nauq.302 (Nguyễn Minh Quân)]

I tried removing BP class and recreated it. Everything is worked now