there are various erros in the generated proto file when use sol-anchor-beta

Run substreams init, choose sol-anchor-beta, and reproduce with substreams build. Inspect the generated program.proto around the duplicate message definitions reported near lines 20, 157, and 159; done means the template generates a valid proto file without duplicate symbols or parsing errors.

@cxp-13 ➜ /workspace (main) $ substreams build
Building manifest file: /workspace/substreams.yaml
Running command in /workspace: `substreams protogen /workspace/substreams.yaml --exclude-paths sf/substreams/rpc,sf/substreams/v1,sf/substreams/sink,sf/substreams/index,sf/substreams/index/v1,instructions.proto,transactions.proto,google`...
Error: reading manifest "/workspace/substreams.yaml": unable to get package: unable to convert manifest to package: loading protobuf: error parsing proto files ["program.proto"] (import paths: ["/workspace/proto" "/workspace"]): program.proto:157:17: syntax error: unexpected '='
Error: error running protogen: error running protogen: error running `substreams protogen /workspace/substreams.yaml --exclude-paths sf/substreams/rpc,sf/substreams/v1,sf/substreams/sink,sf/substreams/index,sf/substreams/index/v1,instructions.proto,transactions.proto,google`: exit status 1
@cxp-13 ➜ /workspace (main) $ substreams build
Building manifest file: /workspace/substreams.yaml
Running command in /workspace: `substreams protogen /workspace/substreams.yaml --exclude-paths sf/substreams/rpc,sf/substreams/v1,sf/substreams/sink,sf/substreams/index,sf/substreams/index/v1,instructions.proto,transactions.proto,google`...
Error: reading manifest "/workspace/substreams.yaml": unable to get package: unable to convert manifest to package: loading protobuf: error parsing proto files ["program.proto"] (import paths: ["/workspace/proto" "/workspace"]): program.proto:159:9: symbol "substreams.v1.program.LendingAccountBorrowEvent" already defined at program.proto:20:9
Error: error running protogen: error running protogen: error running `substreams protogen /workspace/substreams.yaml --exclude-paths sf/substreams/rpc,sf/substreams/v1,sf/substreams/sink,sf/substreams/index,sf/substreams/index/v1,instructions.proto,transactions.proto,google`: exit status 1

It generate program.proto has problem, when execute substreams init and choose the sol-anchor-beta - Given an Anchor JSON IDL, create a Substreams that decodes instructions and events

there are various erros in the generated proto file.

question 1: Produce two same pieces of message.

message LendingAccountBorrowEvent {
  string trx_hash = 1;
}

message LendingAccountBorrowEvent {
      AccountEventHeader header = 1;
      string bank = 2;
      string mint = 3;
      uint64 amount = 4;
}