{"record":{"id":"dde35438495cd672","repo":"fluent/fluentd","slug":"self-name-config-argument-called-twice","errorCode":null,"errorMessage":"#{self.name}: config_argument called twice","messagePattern":"#(.+?): config_argument called twice","errorType":"exception","errorClass":"ArgumentError","httpStatus":null,"severity":"error","filePath":"lib/fluent/config/configure_proxy.rb","lineNumber":309,"sourceCode":"        end\n\n        if opts[:deprecated] && opts[:obsoleted]\n          raise ArgumentError, \"#{name}: both of deprecated and obsoleted cannot be specified at once\"\n        end\n\n        [name, block, opts]\n      end\n\n      def configured_in(section_name)\n        if @configured_in_section\n          raise ArgumentError, \"#{self.name}: configured_in called twice\"\n        end\n        @configured_in_section = section_name.to_sym\n      end\n\n      def config_argument(name, type = nil, **kwargs, &block)\n        if @argument\n          raise ArgumentError, \"#{self.name}: config_argument called twice\"\n        end\n        name, block, opts = parameter_configuration(name, type, **kwargs, &block)\n\n        @argument = [name, block, opts]\n        name\n      end\n\n      def config_param(name, type = nil, **kwargs, &block)\n        name, block, opts = parameter_configuration(name, type, **kwargs, &block)\n\n        if @current_description\n          config_set_desc(name, @current_description)\n          @current_description = nil\n        end\n\n        @sections.delete(name)\n        @params[name] = [block, opts]\n        name","sourceCodeStart":291,"sourceCodeEnd":327,"githubUrl":"https://github.com/fluent/fluentd/blob/dd45c6e18dc7be33b5e5a0f0767bf46307ff5626/lib/fluent/config/configure_proxy.rb#L291-L327","documentation":"Error \"#{self.name}: config_argument called twice\" thrown in fluent/fluentd.","triggerScenarios":"Thrown at lib/fluent/config/configure_proxy.rb:309 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"dd45c6e18dc7be33b5e5a0f0767bf46307ff5626","analyzedAt":"2026-08-21T16:22:07.332Z","schemaVersion":2},"datasetVersion":"2026-08-21T18:17:14.833Z"}