World Corrupted 0.14.0

I was playing my survival in MCPE 0.14.0 and suddenly the black screen appeared, I couldn't
Click anything so I quit the game. Then I opened it again and when I tried to enter my world this error came to me: "World Name" is corrupted and can't be started. I was searching everywhere but there was no solution. Please if you could help me to get my world back, I spent a lot of time working on it.

Device: Samsung Galaxy Grand Neo (GT-i9060)

Thanks

Sorry for possible mistakes, I am not speaking English.