I can't open my world

Whenever I try to enter my world, the game closes and throws me to my phone home screen. If I create a new world, it opens, but something happened to my main world. I can join to servers and enter to my friend's world. In the beginning, the world was loading and after approximately 30 seconds it crashed and then stopped loading altogether. Before that, I had been playing in this world for a little less than a month. Sorry for the watermark on the attached video, I had to compress the video.