Error import app BPM

When i try to import BMP samples app ( v 8) , i have this error

Error importing: StudioApp{id=6, name=Query Builder(Inventory), code=BPM-5, sequence=0, isInAppView=false}
Error importing: StudioApp{id=6, name=Query Builder(Inventory), code=BPM-5, sequence=0, isInAppView=false}
Error importing: MetaJsonField{id=77, name=panel1, type=panel, model=com.axelor.apps.stock.db.Inventory, modelField=attrs}
Error importing: MetaJsonField{id=78, name=createInventoryBpm, title=Create Inventory From BPM, type=button, model=com.axelor.apps.stock.db.Inventory, modelField=attrs}
Error importing: WkfModel{id=6, code=BPM-5, name=Inventory, statusSelect=1, isActive=true, newVersionOnDeploy=false, generatedFromCallActivity=false, sendAdminsNotification=false}

In version 7.2.2 it s work fine