read properties of undefined (reading 'map') TypeError: Cannot read properties of undefined (reading 'map') at Dialogs

Всем привет! Я новичок и не могу понять как это пофиксить read properties of undefined (reading 'map') TypeError: Cannot read properties of undefined (reading 'map') at Dialogs

const Dialogs = (props) => {

 let dialogsElements = props.dialogs.map((d) => (
    <DialogItem name={d.name} id={d.id} 
  )); 
  
  let messagesElements = props.messages.map((m) => (
    <Message message={m.message} 
  ));

App: Dialogs
store={props.store}
dialogs={props.dialogs} 
messages={props.messages}
newMessageBody={props.newMessageBody}