Parse error at line 11: illegal field rule: int32

[sorrigit]

when issuing command "node server.js" I receive the following error:

Error: Parse error at line 11: illegal field rule: int32
at Parser.ProtoBuf.DotProto.ParserPrototype._parseMessage (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/protobufjs/dist/protobuf.js:1117:31)
at Parser.ProtoBuf.DotProto.ParserPrototype.parse (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/protobufjs/dist/protobuf.js:762:34)
at Function.ProtoBuf.DotProto.Parser.parse (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/protobufjs/dist/protobuf.js:797:39)
at Object.ProtoBuf.loadProto (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/protobufjs/dist/protobuf.js:5128:59)
at Object.ProtoBuf.loadProtoFile (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/protobufjs/dist/protobuf.js:5174:52)
at Object.load (/home/ilsorrisodellagioconda/cloud-grpc/start/node_modules/grpc/index.js:135:26)
at Object.deprecated [as load] (internal/util.js:66:15)
at Object. (/home/ilsorrisodellagioconda/cloud-grpc/start/server.js:3:23)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)