{"record":{"id":"ab18dd58723f52b1","repo":"octobercms/october","slug":"invalid-parent-type","errorCode":null,"errorMessage":"Invalid parent type: {}","messagePattern":"Invalid parent type: (.+?)","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"modules/backend/vuecomponents/treeview/assets/js/classes/draganddrop.js","lineNumber":573,"sourceCode":"            parentNode = null;\n\n        switch (dropData.to.parentType) {\n            case 'drop-parent':\n                targetNodeList = node.parentNodeList;\n                parentNode = node.$parent;\n                break;\n            case 'this':\n                if (typeof node.nodeData.nodes === 'undefined') {\n                    // Vue 3: Direct assignment is reactive\n                    node.nodeData.nodes = [];\n                }\n\n                targetNodeList = node.nodeData.nodes;\n                parentNode = node;\n                node.expand();\n                break;\n            default:\n                throw new Error('Invalid parent type: ' + dropData.to.parentType);\n        }\n\n        switch (dropData.to.indexType) {\n            case 'above':\n                targetIndex = node.indexInParent;\n                break;\n            case 'below':\n                targetIndex = node.indexInParent + 1;\n                break;\n            case 'first':\n                targetIndex = 0;\n                break;\n            default:\n                throw new Error('Invalid index type: ' + dropData.to.indexType);\n        }\n\n        dropData.droppedNodes.forEach(function(droppedNodeData) {\n            var originalNode = droppedNodeData.nodeData;","sourceCodeStart":555,"sourceCodeEnd":591,"githubUrl":"https://github.com/octobercms/october/blob/b608633a7e8922487d91a8161499020121c3b3bf/modules/backend/vuecomponents/treeview/assets/js/classes/draganddrop.js#L555-L591","documentation":"Error \"Invalid parent type: {}\" thrown in octobercms/october.","triggerScenarios":"Thrown at modules/backend/vuecomponents/treeview/assets/js/classes/draganddrop.js:573 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":"b608633a7e8922487d91a8161499020121c3b3bf","analyzedAt":"2026-08-21T04:24:57.515Z","schemaVersion":2},"datasetVersion":"2026-08-21T11:28:35.574Z"}