{"record":{"id":"b94c32152ee59ec2","repo":"multica-ai/multica","slug":"value-must-be-a-string","errorCode":null,"errorMessage":"value must be a string","messagePattern":"value must be a string","errorType":"validation","errorClass":null,"httpStatus":400,"severity":"error","filePath":"server/internal/handler/property.go","lineNumber":320,"sourceCode":"// values where possible — agents consume these directly to self-correct.\nfunc validatePropertyValue(def db.IssueProperty, raw json.RawMessage) ([]byte, error) {\n\tif len(raw) == 0 {\n\t\treturn nil, errors.New(\"value is required\")\n\t}\n\tvar v any\n\tif err := json.Unmarshal(raw, &v); err != nil {\n\t\treturn nil, fmt.Errorf(\"value must be valid JSON: %w\", err)\n\t}\n\tif v == nil {\n\t\treturn nil, errors.New(\"value cannot be null (use DELETE to unset a property)\")\n\t}\n\n\tcfg := parsePropertyConfig(def.Config)\n\tswitch def.Type {\n\tcase \"text\":\n\t\ts, ok := v.(string)\n\t\tif !ok {\n\t\t\treturn nil, errors.New(\"value must be a string\")\n\t\t}\n\t\tif strings.TrimSpace(s) == \"\" {\n\t\t\treturn nil, errors.New(\"value cannot be empty (use DELETE to unset a property)\")\n\t\t}\n\t\tif utf8.RuneCountInString(s) > maxPropertyTextValueLen {\n\t\t\treturn nil, fmt.Errorf(\"value must be %d characters or fewer\", maxPropertyTextValueLen)\n\t\t}\n\t\treturn json.Marshal(sanitizeNullBytes(s))\n\tcase \"url\":\n\t\ts, ok := v.(string)\n\t\tif !ok {\n\t\t\treturn nil, errors.New(\"value must be a URL string\")\n\t\t}\n\t\ts = strings.TrimSpace(s)\n\t\tif len(s) > maxPropertyURLValueLen {\n\t\t\treturn nil, fmt.Errorf(\"value must be %d characters or fewer\", maxPropertyURLValueLen)\n\t\t}\n\t\tu, err := url.Parse(s)","sourceCodeStart":302,"sourceCodeEnd":338,"githubUrl":"https://github.com/multica-ai/multica/blob/2c0912b6ec764b373d44eeea1e80f0d9f11ab417/server/internal/handler/property.go#L302-L338","documentation":"Error \"value must be a string\" thrown in multica-ai/multica.","triggerScenarios":"Thrown at server/internal/handler/property.go:320 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Send the value as a JSON string."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"2c0912b6ec764b373d44eeea1e80f0d9f11ab417","analyzedAt":"2026-08-15T13:25:18.241Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}