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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(182.40000000000003, 7.000000000000001%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBV%3C/text%3E%3C/svg%3E)
VS 2019
Created an MVC APP
Updated all the outdated NuGet packages.
Now in my layout page:
@Scripts.Render("~/bundles/bootstrap")
...gives...
System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=WebGrease
StackTrace:
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteralProperty(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteral(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpressionList(JSToken terminator)
at Microsoft.Ajax.Utilities.JSParser.ParseMemberExpression(AstNode expression, List1 newContexts) at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement) at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment) at Microsoft.Ajax.Utilities.JSParser.ParseBlock() at Microsoft.Ajax.Utilities.JSParser.ParseArrowFunction(AstNode parameters) at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseExpressionList(JSToken terminator) at Microsoft.Ajax.Utilities.JSParser.ParseMemberExpression(AstNode expression, List1 newContexts)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement)
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseBlock()
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseIfStatement()
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseFunctionBody(Block body)
at Microsoft.Ajax.Utilities.JSParser.ParseFunction(FunctionType functionType, Context fncCtx)
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteralProperty(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseObjectLiteral(Boolean isBindingPattern)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseVarDecl(JSToken inToken)
at Microsoft.Ajax.Utilities.JSParser.ParseVariableStatement()
at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
at Microsoft.Ajax.Utilities.JSParser.ParseFunctionBody(Block body)
at Microsoft.Ajax.Utilities.JSParser.ParseFunction(FunctionType functionType, Context fncCtx)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpression(Boolean single, JSToken inToken)
at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
at Microsoft.Ajax.Utilities.JSParser.ParseExpressionList(JSToken terminator)
at Microsoft.Ajax.Utilities.JSParser.ParseMemberExpression(AstNode expression, List1 newContexts) at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseExpression(Boolean single, JSToken inToken) at Microsoft.Ajax.Utilities.JSParser.ParseLeftHandSideExpression(Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus) at Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement) at Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment) at Microsoft.Ajax.Utilities.JSParser.ParseStatements(Block block) at Microsoft.Ajax.Utilities.JSParser.InternalParse() at Microsoft.Ajax.Utilities.JSParser.Parse(DocumentContext sourceContext) at Microsoft.Ajax.Utilities.Minifier.MinifyJavaScript(String source, CodeSettings codeSettings) at System.Web.Optimization.JsMinify.Process(BundleContext context, BundleResponse response) at System.Web.Optimization.Bundle.ApplyTransforms(BundleContext context, String bundleContent, IEnumerable1 bundleFiles)
at System.Web.Optimization.Bundle.GenerateBundleResponse(BundleContext context)
at System.Web.Optimization.Bundle.GetBundleResponse(BundleContext context)
at System.Web.Optimization.BundleResolver.GetBundleContents(String virtualPath)
at System.Web.Optimization.AssetManager.DeterminePathsToRender(IEnumerable`1 assets)
at System.Web.Optimization.AssetManager.RenderExplicit(String tagFormat, String[] paths)
at System.Web.Optimization.Scripts.RenderFormat(String tagFormat, String[] paths)
at System.Web.Optimization.Scripts.Render(String[] paths)
at ASP._Page_Views_Shared__Layout_cshtml.Execute() in C:\Users\Bryan Valencia\Documents\Projects\MVCWizardFail\MVCWizardFail\Views\Shared_Layout.cshtml:line 39
This exception was originally thrown at this call stack:
[External Code]
ASP._Page_Views_Shared__Layout_cshtml.Execute() in _Layout.cshtml
There is a ~/bundles/bootstrap in BundleConfig, which references ~/Scripts/bootstrap.js which is also there.
Is this a valid argument for "never update your modules"?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(86.4, 12%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMJ%3C/text%3E%3C/svg%3E)
In Boundle.Config instead
bundles.Add(new ScriptBundle("~/bundles/mybundle").Include(
try
bundles.Add(new Bundle("~/bundles/mybundle").Include(
Worked for me after I update bootstrap from version 3 to 5 in my newest .NET MVC project .
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(192, 57.99999999999999%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
It worked! Thanks
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 69%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESD%3C/text%3E%3C/svg%3E)
Thanks, it worked for me. Update bootstrap from version 3 to 5.3 in VS2019 .NET MVC project successful.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(195.2, 51%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYS%3C/text%3E%3C/svg%3E)
Hi @Bryan Valencia ,
How do you write in the BundleConfig? Maybe you could check your BundleConfig.You could change ScriptBundle to Bundle.Just like this:
bundles.Add(new Bundle("~/bundles/bootstrap").Include(
"~/Scripts/bootstrap.js",
"~/Scripts/respond.js"));
Best regards,
Yijing Sun
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 6%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMM%3C/text%3E%3C/svg%3E)
I´m geeting the same issue that @Bryan Valencia . I done the changes, but still not load the boostraps elements
The BundleConfig was created in the pre-updated state when I created the MVC project.
hi @Mr.M ,
but still not load the boostraps elements
After you changing the bundles,if you have 404 errors causing that you can't load the load the boostraps elements?
You could check if you registered Bundles in the Global.asax.cs.Just like this:
BundleConfig.RegisterBundles(BundleTable.Bundles);
Best regards,
Yijing Sun
Hi @Bryan Valencia ,
I suggest you could change the BundleConfig in the App_Start and then rebuild your solution.
Best regards,
Yijing Sun
Hi,
I have all the changes that you post before:
bundles.Add(new Bundle("~/bundles/bootstrap").Include(
"~/Scripts/bootstrap.js"));
BundleConfig.RegisterBundles(BundleTable.Bundles);
But, the Index.cshtml still don´t have the boostraps element when build the app....looks like simple html page...don´t have the styles.
Regards.
PD: Image attached
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(134.4, 79%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPS%3C/text%3E%3C/svg%3E)
hi
im facing this problem too!
after updating my bootstrap version to last ver(5) this error occurred..!
ive changed Bundleconfig as above but my web page has not any style
are you still having this problem ?
please help me
thanks a lot
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(281.6, 7.000000000000001%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
I am having the same issue, have tried all the above fix actions...still have the same problem described.
Anyone get this one solved?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
To perform minimization the bundler must parse the files. The error means there is a syntax error in the input files to the bundler.
note: you could detect the offending file by removing one at a time.
also check that you have the latest nuget package for web grease, so that it supports the latest syntax,
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 99%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMD%3C/text%3E%3C/svg%3E)
Hello team,
I used the default ASP.NET MVC C# template in visual studio.
The template use the boostrap v3. The migration is ok until to v4.6.1.
After the v5, @Scripts.Render generates an exception.
I try to rollback only bootstrap.js file, i don't have exception. The problem is link with content of file.
I try to change ScriptBundle by Bundle. I don't have exception.
Now, i rebuild the application and cleanup the cache of navigator. The display page is not good.
Devtools send an error on loading of bootstrap.min.js.map.
DevTools n’a pas pu charger le mappage de source : Désolé... Nous n’avons pas pu charger du contenu pour https://xxx.domain.fr/bundles/bootstrap.min.js.map:Erreur HTTP : code de statut 404,net::ERR_HTTP_RESPONSE_CODE_FAILURE
I think, it is necessary to review the NuGet package.
For the moment, I canceled the migration.
What can I change?
Happy new year,
Mick