{"record":{"id":"1dfc1d9bf494ac59","repo":"hyperledger/fabric","slug":"failed-to-serialize-signer","errorCode":null,"errorMessage":"failed to serialize signer","messagePattern":"failed to serialize signer","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/peer/lifecycle/chaincode/install.go","lineNumber":135,"sourceCode":"\t\ti.Input.PackageFile = args[0]\n\t}\n}\n\n// Install installs a chaincode for use with _lifecycle.\nfunc (i *Installer) Install() error {\n\terr := i.Input.Validate()\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tpkgBytes, err := i.Reader.ReadFile(i.Input.PackageFile)\n\tif err != nil {\n\t\treturn errors.WithMessagef(err, \"failed to read chaincode package at '%s'\", i.Input.PackageFile)\n\t}\n\n\tserializedSigner, err := i.Signer.Serialize()\n\tif err != nil {\n\t\treturn errors.Wrap(err, \"failed to serialize signer\")\n\t}\n\n\tproposal, err := i.createInstallProposal(pkgBytes, serializedSigner)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\tsignedProposal, err := signProposal(proposal, i.Signer)\n\tif err != nil {\n\t\treturn errors.WithMessage(err, \"failed to create signed proposal for chaincode install\")\n\t}\n\n\treturn i.submitInstallProposal(signedProposal)\n}\n\nfunc (i *Installer) submitInstallProposal(signedProposal *pb.SignedProposal) error {\n\tproposalResponse, err := i.EndorserClient.ProcessProposal(context.Background(), signedProposal)\n\tif err != nil {","sourceCodeStart":117,"sourceCodeEnd":153,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/internal/peer/lifecycle/chaincode/install.go#L117-L153","documentation":"Install() could not obtain the local signer's serialized identity via i.Signer.Serialize(), which is needed to embed the creator in the install proposal. This reflects an msp/identity configuration problem in the peer CLI process.","triggerScenarios":"i.Signer.Serialize() errors during `peer lifecycle chaincode install` because the local MSP identity could not be loaded or serialized (missing cert/key files, malformed MSP directory).","commonSituations":"CORE_PEER_LOCALMSPID / CORE_PEER_MSPCONFIGPATH wrong or pointing to an incomplete MSP dir (missing signcerts/keystore); admin cert not present in the MSP; env set after switching users/orgs.","solutions":["Verify CORE_PEER_MSPCONFIGPATH points to a valid MSP directory containing signcerts/ and keystore/ (or sk) files.","Confirm CORE_PEER_LOCALMSPID matches the MSP folder name.","Re-copy or regenerate the MSP material from the crypto config.","Export the admin signer correctly (e.g. use the org admin MSP path)."],"exampleFix":"// before\nexport CORE_PEER_MSPCONFIGPATH=/tmp/empty-msp\n// after\nexport CORE_PEER_LOCALMSPID=Org1MSP\nexport CORE_PEER_MSPCONFIGPATH=${PWD}/crypto/peerOrganizations/org1/users/Admin@org1/msp","handlingStrategy":"validation","validationCode":"mspDir := os.Getenv(\"CORE_PEER_MSPCONFIGPATH\")\nfor _, p := range []string{\"signcerts\", \"keystore\"} {\n    if _, err := os.Stat(filepath.Join(mspDir, p)); err != nil {\n        return fmt.Errorf(\"MSP dir %s missing %s\", mspDir, p)\n    }\n}\nif os.Getenv(\"CORE_PEER_LOCALMSPID\") == \"\" {\n    return errors.New(\"CORE_PEER_LOCALMSPID not set\")\n}","typeGuard":null,"tryCatchPattern":"if err := install(); err != nil {\n    if strings.Contains(err.Error(), \"failed to serialize signer\") {\n        // re-export CORE_PEER_MSPCONFIGPATH to a valid admin MSP and retry\n    }\n    return err\n}","preventionTips":["Verify MSP dir contains signcerts/ and keystore/","Use the org Admin MSP for lifecycle install","Re-export peer env vars when switching orgs","Validate crypto material after regeneration"],"tags":["fabric","msp","identity","signer"],"backgroundTag":"msp-identity-serialization-failed","analyzedSha":"2736b63f8fd5932511d56fe68b7039d15977f7f6","analyzedAt":"2026-09-04T08:52:36.465Z","contentChangedAt":"2026-09-04T08:52:36.465Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}