Uncaught SyntaxError: Unexpected token <

function account_verify_success(data){
	console.log('response:'+data);
	var response = JSON.parse(data);
	if (response.result == "ok") {
			tok = response.tok;
		
		console.log('ID check through');
			send_user_login_to_ap_dev();
		
	} else if (response.result == "fail"){
		    console.log('Invalid Account');
	    alert('Invalid Account');
		document.getElementById('user').value = document.getElementById('pwd').value = '';
	}
}

<input type="button" id="lLogin" value="login" onClick="account_verify()">