Republic of Ireland captain Seamus Coleman says the players must take responsibility for another disappointing display.
Boos rang out around the Aviva Stadium at the end of last night's nil all draw with Northern Ireland.
It is the Boys in Greens third successive home game without a goal, and goalkeeper Darren Randolph made a number of crucial saves to spare the home side an embarrassing defeat.
Coleman says his team must have the courage to go forward.
🗒️ | Ireland warmed up for their crucial UEFA Nations League match against Denmark with a hard-fought 0-0 draw with Northern Ireland at the Aviva Stadium on Thursday evening.
Full report: https://t.co/NggkiIYkRO #COYBIG pic.twitter.com/9tZtdgDtxa— FAIreland ⚽️🇮🇪 (@FAIreland) November 15, 2018
The Republic of Ireland's next opponents Denmark play Wales in the Nations Cup in Cardiff this evening.
The home side have Real Madrid star Gareth Bale back from an ankle injury.
Anything less than a Welsh win will relegate Ireland to League C of the Nations League.