Variable has been assigned but has UnassignedReferenceExcecption

Questions & Answers
1

This is my script. You can see that declared some variables at top:

var QuestAccepted = false;
var TextBoxOnCheck: boolean = false;
var MessageBox: GameObject;
var TextBox: GameObject;
var QuestBox: GameObject;
var QuestText: GameObject;

function OnMouseDown() {
	if(!TextBoxOnCheck) {
		MessageBox.SetActive(true);

		if(!QuestAccepted) {
			TextBox.GetComponent.<Text>().text = 'Villager: Hello, some bandit have stollen my money. Could you retrieve it from them on the other side of the river?

[F] to Accept, to refuse.';
}
else {
TextBox.GetComponent.().text = ‘Villager: Get going then!’;
}
}
else {
MessageBox.SetActive(false);
}

	TextBoxOnCheck = !TextBoxOnCheck;
}

function CloseMessageBox() {
	MessageBox.SetActive(false);
	TextBoxOnCheck = false;	
}

function AcceptQuest() {
	QuestText.GetComponent.<Text>().text = 'Active Quest: Recover the loot';
	QuestAccepted = true;
	TextBox.GetComponent.<Text>().text = 'Villager: Nice! I\'ll be waiting here, tell me when your job is done!';

	//yield WaitForSeconds(3);
	//CloseMessageBox();
}

function Update() {
	if(Input.GetButtonDown('Use')) {
		AcceptQuest();
	}
	else if(Input.GetButtonDown('Cancel')) {
		CloseMessageBox();
	}
}

And those are assigned in inspector as I dragged and dropped. When the game starts, all functions works well but this error message is in the console:

UnassignedReferenceException: The variable QuestText of Quest001 has not been assigned.
You probably need to assign the QuestText variable of the Quest001 script in the inspector.
UnityEngine.GameObject.GetComponent
2

Search the hierarchy for the script name, it’s probably a duplicate you’re not paid attention to.