cannot iter() EventReader<MouseMotion>

[serene ivy]

no method named iter found for struct bevy::prelude::EventReader in the current scope
method not found in EventReader<'_, '_, MouseMotion>

why? bevy 0.13

[thorn meteor]

did you try reading the docs for EventReader?
https://docs.rs/bevy/latest/bevy/ecs/event/struct.EventReader.html#method.read