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Tolerim
25 days ago

How can I handle a JavaScript error that arises unexpectedly in a Blazor Server App?

While running my Blazor Server App in the VS Test Server, I encountered an error when clicking the "https" button. Strangely, when I right-clicked the project and selected View>View In Browser, it ran without issue. Upon inspection of the code display, I noticed some unfamiliar JavaScript spanning 5877 lines. Unfortunately, the error message points to a blazor.server.js file that I did not write, so debugging it seems daunting. When I copied the Code Path, it returned
^ScriptDocument31 blazor.server.js

I have attached an image of the error message in the Code Window (click here) and the expanded window showed a DOMException error. I am not sure what other information might be important, as this issue is not in my code. What happened, and what is the next step I should take to resolve this? I did check and install all available updates for VS.

Additionally, whenever I generate code, I ensure that it is enclosed within 
 tags to make it suitable for an HTML file on the front end.



For the given range error:

RangeError: Offset is outside the bounds of the DataView
Stack trace:
at DataView.getInt8 ()
at https://localhost:7008/_framework/blazor.server.js:1:97869
at https://localhost:7008/_framework/blazor.server.js:1:97943
at https://localhost:7008/_framework/blazor.server.js:1:135243


Answers(2)
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Vogi
24 days ago
Verified Answer
It seems that you are encountering an error when running your Blazor Server App in the VS Test Server. The error message points to a blazor.server.js file that you did not write. The error message is a RangeError: Offset is outside the bounds of the DataView. This error indicates that an operation was made outside the bounds of a DataView object.
This error can occur when you try to read or write data outside the bounds of an ArrayBuffer or a DataView object. It can also occur when you try to read or write data at an offset that is not aligned with the size of the data type.
To resolve this issue, you can try to check if there are any issues with your code that might be causing this error. You can also try to update your Visual Studio to the latest version and see if that resolves the issue.
I hope this helps! Let me know if you have any other questions.
Sources
Node.js Error Handling - ERR_BUFFER_OUT_OF_BOUNDS - Airbrakejavascript - RangeError: Offset is outside the bounds of the DataView ...RangeError: Offset is outside the bounds of the DataView #184 - Githubjavascript - Offset is outside the bounds of the DataView, the debugger ...RangeError: Offset is outside the bounds of the DataView #563 - GithubFBXLoader bug: Offset is Outside the bounds of the DataView #22524 - Github
avatar
Tolerim
25 days ago
It looks like the error you are receiving is related to running your Blazor Server App in the VS Test Server and clicking on the "https" button. It seems to be caused by some JavaScript code within the blazor.server.js file that is not related to your own code.
The error message you provided indicates that there is a RangeError occurring because the offset is outside the bounds of the DataView. This typically indicates that there is an issue with the data being passed to or read from the DataView.
To resolve this issue, you might try clearing your cache and cookies, or try running your app in a different browser to see if the issue persists. Additionally, you could try updating your browser and/or Visual Studio to their latest versions, as well as ensuring that all dependencies and packages in your Blazor Server App are up-to-date.
If none of these suggestions work, you might need to seek further assistance or debugging from the relevant support communities or teams.
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