referenceerror: sessionstorage is not defined angular

My project is running but i am getting error in terminal.

let obj = {
doc_id: sessionStorage.getItem('doc_id'),
batch_no: sessionStorage.getItem('batch_no')
}


I tried to add as below but still that error present in terminal. But my project works in angular 17

let obj = {
doc_id: sessionStorage?.getItem('doc_id'),
batch_no: sessionStorage?.getItem('batch_no')
}

Continue reading...