'Bitcoin Core - Error'
This error occurs when a block that was written to disk is corrupted. This could be due to hardware failure or just simply random chance. Since the corrupted block for you occurred early on, the easiest way to fix this issue is to simply delete the blockchain and redownload it. To do that, just delete the blocks/ and chainstate/ folders inside of the datadir (the directory that contains the debug.log file). Then start Bitcoin Core.