Error \"the EAC found that the game files have been changed (error code 0)\" (Dead by Daylight)

I go to a J. F. D. wrote the EAC found that the game files have been changed (error code 0). To solve this problem, please check the integrity of game cache, etc. (for a complete description of the error is attached below in screenshot). I verify the integrity cache of the game says checking steam files 100% complete all files successfully verified then I go into the game but error is failed what to do? although I have the files of the game have not changed and nothing has made the morning came, played and then went to do business come I come in the game and then this error shows

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