All my photos and presents diseappered

Hi,

last week I was going to import a pic on the lightroom app on mobile. For an entire day and a half, it didn't work, then he worked but all the presents and the photos are black (like if the app can't show you the photo) and if you try to open the present or the photos it remains black and say ''fail to load development version''. The only thing that I can see is the last picture that I import after this thing that happened. The version that I have is the 5.4.1 one and I have the app on an Android. 

The first files that I attach (the 41kb one) are the present that doesn't work anymore, I tried to reupload but nothing.. 

I wish that you find a solution because they were important photos and the present (I can't spend other money on that...).

-Annalisa