Fabric configtxgen reported an error when generating the founding block: While parsing config: yaml: unknown anchor OrdererDefaults referenced

./bin/configtxgen -profile OrgsOrdererGenesis -outputBlock orgs.genesis.block -channelID syschannel

Use configtxgen in the fabric to generate a founding block based on configtx.yaml. The error is as follows:

Reason: The Profiles part of configtx.yaml should be placed at the end of the file.