Linux                108717  63 19 187042  64 30 1258291200 [Projects]
superblock 0, blocksize=4096 [Projects]
superblock 32768, blocksize=4096 [Projects]
superblock 98304, blocksize=4096 [Projects]
superblock 163840, blocksize=4096 [Projects]
superblock 229376, blocksize=4096 [Projects]
superblock 294912, blocksize=4096 [Projects]
superblock 819200, blocksize=4096 [Projects]
superblock 884736, blocksize=4096 [Projects]
superblock 1605632, blocksize=4096 [Projects]
superblock 2654208, blocksize=4096 [Projects]

To repair the filesystem using alternate superblock, run
fsck.ext4 -p -b superblock -B blocksize device