Angular 6 - ERROR TypeError: Cannot read property 'value' of undefined
I can't belive that a single '?' ruined my day that's why i'm creating this post . i'll try to make this as simple as i can. This happens becuse one of your object does'n have the value untill the API response arrives.So use ? to check untill the response arrives for example: question : this . pollForm . get ( "question" )?. value