I'm creating a small tank game with blueprints, and I use a timeline to keep spawning projectiles. But suddenly the timeline doesn't work anymore.

Here is an example I created
Click image for larger version

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As you can see, the Timeline receives the execute command, but doesn't call the update function.
I've alse tried to create new timelines, but none of them are working.

Does anyone know how to fix this?

Any help will be appreciated