# Paraview Error: Start-end tags mismatch. Error offset: 15464\]

**URL:** https://discourse.vtk.org/t/paraview-error-start-end-tags-mismatch-error-offset-15464/11920
**Category:** Support
**Created:** [July 10, 2023, 8:45pm UTC](https://discourse.vtk.org/t/paraview-error-start-end-tags-mismatch-error-offset-15464/11920 "2023-07-10T20:45:42Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Sudhanshu](https://discourse.vtk.org/user_avatar/discourse.vtk.org/sudhanshu/32/7425_2.png) [@Sudhanshu](https://discourse.vtk.org/u/Sudhanshu)
#### Post date: [July 10, 2023, 8:45pm UTC](https://discourse.vtk.org/t/paraview-error-start-end-tags-mismatch-error-offset-15464/11920/1 "2023-07-10T20:45:43Z")

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Hi Everyone,

I am curious if anyone come across the following error. I tried searching on Google for this error. Not much help.

* * *

ERROR: In vtkCityGMLReader.cxx, line 1085  
vtkCityGMLReader (000002976C5A8CC0): XML [C:\Users\sanshu\OneDrive - University of Delaware - o365\UD\_PhD\Research\Extra\airy.TBrook.xml] parsed with errors: Start-end tags mismatch. Error offset: 15464]

ERROR: In vtkExecutive.cxx, line 741  
vtkPVCompositeDataPipeline (000002976BC6EB30): Algorithm vtkCityGMLReader (000002976C5A8CC0) returned failure for request: vtkInformation (000002976C5C6120)  
Debug: Off  
Modified Time: 628543  
Reference Count: 1  
Registered Events: (none)  
Request: REQUEST\_DATA  
FORWARD\_DIRECTION: 0  
ALGORITHM\_AFTER\_FORWARD: 1  
FROM\_OUTPUT\_PORT: 0

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### Author: ![danlipsa](https://discourse.vtk.org/user_avatar/discourse.vtk.org/danlipsa/32/390_2.png) [@danlipsa](https://discourse.vtk.org/u/danlipsa)
#### Post date: [July 10, 2023, 11:48pm UTC](https://discourse.vtk.org/t/paraview-error-start-end-tags-mismatch-error-offset-15464/11920/2 "2023-07-10T23:48:55Z")

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Based on the error message, it seems that your data file is corrupted. Specifically, there is a begin tag that does not have a matching end tag.  
You can try an XML validator to check you file  
[https://www.xmlvalidation.com/](https://www.xmlvalidation.com/)

maybe will give you a better error message, or use an editor and move to the character listed in the message to get more information.

Dan