Begin of the insertion# AppSignal incidents:

https://appsignal.com/openproject-gmbh/sites/62b06dacd2a5e41321946fcf/exceptions/incidents/336

## [Sample 1](https://appsignal.com/openproject-gmbh/sites/62b06dacd2a5e41321946fcf/exceptions/incidents/336/samples/62b06dacd2a5e41321946fcf-1226811221030228470917223225603)
End of the insertion **Message**

Begin of the insertion```textEnd of the insertion Begin of the deletion ```
E is nullEnd of the deletion
Begin of the insertionCannot read properties of undefined (reading 'replace')
End of the insertion Read more: Begin of the insertionhttps://ckeditor.com/docs/ckeditor5/latest/support/error-codes.html#error-Cannot read properties of undefined (reading 'replace')End of the insertion Begin of the deletion https://ckeditor.com/docs/ckeditor5/latest/support/error-codes.html#error-E is nullEnd of the deletion
```

**Backtrace (last 10 lines)**

Begin of the insertion```textEnd of the insertion Begin of the deletion ```End of the deletion
Begin of the insertionwebpack:/OPEditor/src/plugins/code-block/converters.js:80:31 replace
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-utils/src/emittermixin.js:146:47End of the insertion Begin of the deletion webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/model/utils/deletecontent.js:60:9 n
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/model/model.js:517:9 cu
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-utils/src/observablemixin.js:181:45End of the deletion apply Begin of the insertion
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcastdispatcher.js:217:18 fire
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcastdispatcher.js:246:33 _convertItem
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcastdispatcher.js:150:71 _convertChildren
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcasthelpers.js:443:63 convertChildren
End of the insertion Begin of the deletion
End of the deletion webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-utils/src/emittermixin.js:146:47 apply Begin of the insertion
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcastdispatcher.js:223:18End of the insertion Begin of the deletion
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-utils/src/observablemixin.js:184:29End of the deletion fire Begin of the insertion
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/conversion/upcastdispatcher.js:185:37 _convertItem
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/controller/datacontroller.js:357:42 convertEnd of the insertion
Begin of the deletion webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-typing/src/inserttextcommand.js:69:19 deleteContent
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/model/model.js:805:69 callback
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-engine/src/model/model.js:198:22 _runPendingChanges
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-typing/src/inserttextcommand.js:64:15 enqueueChange
webpack:/OPEditor/node_modules/@ckeditor/ckeditor5-utils/src/observablemixin.js:181:45 apply
End of the deletion ``` Begin of the deletion

View on AppSignal: https://appsignal.com/openproject-gmbh/sites/62b06dacd2a5e41321946fcf/exceptions/incidents/336 End of the deletion