I have solved the “load errors:warning” below and now it works (the first warning “Attempted to access TRASH_SwimComponent …” is just a warning ) .
@SupportiveEntity Thanks for your time , you help me a lot with this question : “Are all the other functions of the character working correctly?”
The load errors warning : the health bar was corrupted in the BP , i create a new BP_HealthBar1 and it works now.
[2022.11.19-05.54.13:424][ 0]LoadErrors: Warning: CreateExport: Failed to load Outer for resource ‘WidgetTree’: EditorUtilityWidgetBlueprint /Game/AGame/BP_UI/BP_HealthBar.BP_HealthBar
[2022.11.19-05.06.35:380][ 0]LogBlueprint: Warning: [AssetLog] D:\Documents\UnrealProjects_projetEnCours\RouilleFeu\Content\AGame\BP_characters\BP_Character.uasset: [Compiler] Could not find a variable named “HealthBar” in ‘BP_Character’.