{"record":{"id":"43b74c85795f641b","repo":"hashicorp/terraform","slug":"attempted-to-encode-a-malformed-backend-state-file-43b74c","errorCode":null,"errorMessage":"attempted to encode a malformed backend state file; provider data is missing","messagePattern":"attempted to encode a malformed backend state file; provider data is missing","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/command/workdir/statestore_config_state.go","lineNumber":52,"sourceCode":"\n// Empty returns true if there is no active state store.\nfunc (s *StateStoreConfigState) Empty() bool {\n\treturn s == nil || s.Type == \"\"\n}\n\n// Validate returns true if there are no missing expected values, and\n// important values have been validated, e.g. FQNs. When the config is\n// invalid an error will be returned.\nfunc (s *StateStoreConfigState) Validate() error {\n\t// Are any bits of data totally missing?\n\tif s.Empty() {\n\t\treturn fmt.Errorf(\"attempted to encode a malformed backend state file; data is empty\")\n\t}\n\tif s.Type == \"\" {\n\t\treturn fmt.Errorf(\"attempted to encode a malformed backend state file; state store type is missing\")\n\t}\n\tif s.Provider == nil {\n\t\treturn fmt.Errorf(\"attempted to encode a malformed backend state file; provider data is missing\")\n\t}\n\tif s.ConfigRaw == nil {\n\t\treturn fmt.Errorf(\"attempted to encode a malformed backend state file; state_store configuration data is missing\")\n\t}\n\n\t// Validity of data that is there\n\terr := s.Provider.Source.Validate()\n\tif err != nil {\n\t\treturn fmt.Errorf(\"state store is not valid: %w\", err)\n\t}\n\n\t// Version information is required if the provider isn't builtin or unmanaged by Terraform\n\tswitch s.ProviderSupplyMode {\n\tcase getproviders.BuiltIn, getproviders.Reattached, getproviders.DevOverride:\n\t\t// These modes do not require version information\n\tcase getproviders.ManagedByTerraform:\n\t\tif s.Provider.Version == nil {\n\t\t\treturn fmt.Errorf(\"state store is not valid: provider version data is missing despite provider %s being managed by Terraform.\", s.Provider.Source.ForDisplay())","sourceCodeStart":34,"sourceCodeEnd":70,"githubUrl":"https://github.com/hashicorp/terraform/blob/d32a084675427f5ac3f7d2868578ef8b2c1dc525/internal/command/workdir/statestore_config_state.go#L34-L70","documentation":"StateStoreConfigState.Validate() found Provider == nil. A state_store requires a backing provider to manage it, so a missing Provider pointer means the record is incomplete and unsafe to encode/use.","triggerScenarios":"Programmatic construction of StateStoreConfigState that sets Type but never assigns Provider; or a corrupted on-disk file whose `state_store.provider` section was stripped.","commonSituations":"Custom tooling, partial deserialisation, hand-editing the backend state file, or an interrupted `terraform init` that left Provider unwritten.","solutions":["Delete .terraform/terraform.tfstate and re-run `terraform init` so Provider is populated.","If building the struct in code, always set Provider (Source, Version, ConfigRaw) alongside Type.","Restore the file from backup."],"exampleFix":"rm .terraform/terraform.tfstate\nterraform init","handlingStrategy":"validation","validationCode":"// pre-flight: require Provider for state_store\nif s.Provider == nil {\n    return errors.New(\"state_store requires a nested provider; populate Provider before encoding\")\n}","typeGuard":"func (s *StateStoreConfigState) hasProvider() bool { return s != nil && s.Provider != nil }","tryCatchPattern":null,"preventionTips":["Always run `terraform init` to populate Provider.","In code, construct Provider via a factory that sets Source, Version, and ConfigRaw."],"tags":["backend","state-store","validate","missing-field","provider"],"backgroundTag":null,"analyzedSha":"d32a084675427f5ac3f7d2868578ef8b2c1dc525","analyzedAt":"2026-08-11T18:43:52.779Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}