Hi. We have a mud hut in Herts that has been used to hold community events/ workshops in for about 10 years.  Recently I arrived to find holes made in the wall  ( as seen in the photos ☹️).  Does any one have advice on how best repair this damage?  ( I am new to such building work. I tried using mud on the smaller hole, but not surprisingly it cracked when it dried ).  Many thanks if you can help!