Multi-part RAR files are frequently password-protected. Ensure you have the password from the original source.
The name suggests it is the fourth part of a compressed file for "Episode 01" (EP01) of a series or video, shared via a platform named "5156share.com". Download File 5156share.com.ShaSFJ.EP01.part4.rar
Are you getting a (like a CRC error or password prompt)? Multi-part RAR files are frequently password-protected
Use extraction software like WinRAR or 7-Zip to extract only the first part ( .part1.rar ). Download File 5156share.com.ShaSFJ.EP01.part4.rar