code: def info(self, request):
          
  
          self.abort_if_abci_chain_is_not_synced()
  
          # Check if BigchainDB supports the Tendermint version
          if not (hasattr(request, 'version') and tendermint_version_is_compatible(request.version)):
              logger.error(f'Unsupported Tendermint version: {getattr(request, "version", "no version")}.'
                           f' Currently, BigchainDB only supports {__tm_supported_versions__}. Exiting!')
              sys.exit(1)
  
          logger.info(f"Tendermint version: {request.version}")
  
          r = ResponseInfo()
          block = self.bigchaindb.get_latest_block()
          if block:
              chain_shift = 0 if self.chain is None else self.chain['height']
              r.last_block_height = block['height'] - chain_shift
              r.last_block_app_hash = block['app_hash'].encode('utf-8')
          else:
              r.last_block_height = 0
              r.last_block_app_hash = b''
          return r
docs: Return height of the latest committed block.