An error occurred while starting the application.
DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\

Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root, ExclusionFilters filters)

    DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\
        Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root, ExclusionFilters filters)
        Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(string root)
        Microsoft.AspNetCore.StaticWebAssetsFileProvider..ctor(string pathPrefix, string contentRoot)
        Microsoft.AspNetCore.StaticWebAssetsLoader+<>c.<UseStaticWebAssetsCore>b__2_0(ContentRootMapping cr)
        System.Linq.Enumerable+SelectEnumerableIterator<TSource, TResult>.MoveNext()
        System.Linq.Enumerable.OfTypeIterator<TResult>(IEnumerable source)+MoveNext()
        System.Collections.Generic.List<T>..ctor(IEnumerable<T> collection)
        System.Linq.Enumerable.ToList<TSource>(IEnumerable<TSource> source)
        Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssetsCore(IWebHostEnvironment environment, Stream manifest)
        Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssets(IWebHostEnvironment environment)
        Microsoft.AspNetCore.WebHost+<>c.<ConfigureWebDefaults>b__9_0(WebHostBuilderContext ctx, IConfigurationBuilder cb)
        Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder+<>c__DisplayClass8_0.<ConfigureAppConfiguration>b__0(HostBuilderContext context, IConfigurationBuilder builder)
        Microsoft.Extensions.Hosting.HostBuilder.BuildAppConfiguration()
        Microsoft.Extensions.Hosting.HostBuilder.Build()
        *.Program.Main(string[] args) in Program.cs

    System.IO.DirectoryNotFoundException: C:\Users\VssAdministrator\.nuget\packages\telerik.ui.for.blazor.trial\1.2.0\staticwebassets\

       at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root, ExclusionFilters filters)

       at Microsoft.Extensions.FileProviders.PhysicalFileProvider..ctor(String root)

       at Microsoft.AspNetCore.StaticWebAssetsFileProvider..ctor(String pathPrefix, String contentRoot)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.<>c.<UseStaticWebAssetsCore>b__2_0(ContentRootMapping cr)

       at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()

       at System.Linq.Enumerable.OfTypeIterator[TResult](IEnumerable source)+MoveNext()

       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)

       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssetsCore(IWebHostEnvironment environment, Stream manifest)

       at Microsoft.AspNetCore.StaticWebAssetsLoader.UseStaticWebAssets(IWebHostEnvironment environment)

       at Microsoft.AspNetCore.WebHost.<>c.<ConfigureWebDefaults>b__9_0(WebHostBuilderContext ctx, IConfigurationBuilder cb)

       at Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder.<>c__DisplayClass8_0.<ConfigureAppConfiguration>b__0(HostBuilderContext context, IConfigurationBuilder builder)

       at Microsoft.Extensions.Hosting.HostBuilder.BuildAppConfiguration()

       at Microsoft.Extensions.Hosting.HostBuilder.Build()

       at *.Program.Main(String[] args) in d:\a\1\s\*\Program.cs:line 11

.NET Core 3.0.0-preview6-27804-01 X86 v4.0.0.0    |   Microsoft.AspNetCore.Hosting version 3.0.0-preview6.19307.2    |    Microsoft Windows 10.0.14393    |   Need help? 

<TileLayoutItem AutoSizeRow="true"></TileLayoutItem>

function (tileId, minSpanSize = 4) {
        try {
            var el = document.getElementById(tileId);
            var tileLayout = $(el).closest(".k-tilelayout")[0];
            var parentTile = $(el).closest(".k-tilelayout-item")[0];

            var headerHeight = $(el).parent().siblings(".k-tilelayout-item-header")[0].offsetHeight;

            var parentSpan = parseInt(parentTile.style.gridRowEnd.split("span ")[1]);
            var gap = parseInt(tileLayout.style.gap.replace("px", ""));
            var rowHeight = parseInt(tileLayout.style.gridAutoRows.split(",")[1].split("px")[0]);

            // cannot recall where I got 1.25 from
            var minSize = Math.ceil((headerHeight + el.offsetHeight) / ((gap / 1.25) + rowHeight));

            // if parent is less than minsize
            if (parentSpan < minSize) {
                parentTile.style.gridRowEnd = "span " + minSize;
                return { id: tileId, minSize: minSize };

                // Otherwise, if min size is greater than or equal to minSpanSie
            } else if (minSize >= minSpanSize) {
                parentTile.style.gridRowEnd = "span " + minSize;
                return { id: tileId, minSize: minSize };
            }

        } catch { }
        return { id: tileId, minSize: -1 };
    

public async Task OnEdit(FileManagerEditEventArgs args)
    {
        Dialogs.AlertAsync(message, "FileManager");
        args.IsCancelled = true;
    }

<TelerikWindow @bind-Visible="ShowAdd" Modal="true" Class="NewRequest">
    <WindowTitle>Add Applications</WindowTitle>
    <WindowContent>
        <div style="position: relative; width: 90vw; max-width: 400px; display: grid; ">
            <span style="font-size: medium">@thisEmployee.EmpNickName</span>
            <div style="align-content: center; padding: 5px; width: 100%; display:flex; justify-content: center; align-items: center; border: inset">
                <div style="padding: 1px "><label for="ckDev">Dev</label><TelerikCheckBox Id="ckDev" @bind-Value="@thisEmployee.Developer" /></div>
                <div style="padding: 1px "><label for="ckSales">Sales</label><TelerikCheckBox Id="ckSales" @bind-Value="@thisEmployee.Salesman" /></div>
                <div style="padding: 1px "><label for="ckEng">Eng</label><TelerikCheckBox Id="ckEng" @bind-Value="@thisEmployee.Engineer" /></div>
                <div style="padding: 1px "><label for="ckPE">PE</label><TelerikCheckBox Id="ckPE" @bind-Value="@thisEmployee.LeadEng" /></div>
                <div style="padding: 1px "><label for="ckPM">PM</label><TelerikCheckBox Id="ckPM" @bind-Value="@thisEmployee.PM" /></div>
                <div style="padding: 1px "><label for="ckPurch">Purch</label><TelerikCheckBox Id="ckPurch" @bind-Value="@thisEmployee.Purchasing" /></div>
                <div style="padding: 1px "><label for="ckSF">Shop</label><TelerikCheckBox Id="ckSF" @bind-Value="@thisEmployee.ShopFore" /></div>
                <div style="padding: 1px "><label for="ckFS">Super</label><TelerikCheckBox Id="ckFS" @bind-Value="@thisEmployee.FieldSuper" /></div>
            </div><br />
            <div style="font-size:smaller">
                <TelerikGrid Data="@allApps" Height="50vh" FilterMode="@GridFilterMode.FilterMenu" FilterMenuType="@FilterMenuType.CheckBoxList">
                    <GridColumns>
                        <GridColumn Field="MenuCategoryTitle" Title="Category" />
                        <GridColumn Field="MenuCategoryID" Width="0" />
                        <GridColumn Width="3em">
                            <Template>
                                <div style="float:left; cursor:pointer; color: forestgreen; padding-right: 8px" title="Add Category" @onclick="@((args) => AddCategory((context as Index_Menu).MenuCategoryID))"><ic class="fad fa-plus-square" /></div>
                            </Template>
                        </GridColumn>
                        <GridColumn Field="MenuItemID" Width="0" />
                        <GridColumn Field="MenuItemTitle" Title="App" />
                        <GridColumn Width="3em">
                            <Template>
                                @if ((context as Index_Menu).MIAssigned == false)
                                {
                                    <div style="float:left; cursor:pointer; color: forestgreen; padding-right: 8px" title="Add App" @onclick="@((args) => AddItem((context as Index_Menu).MenuItemID))"><ic class="fad fa-plus-square" /></div>
                                }
                                else
                                {
                                    <div style="float:left; cursor:pointer; color: red; padding-right: 8px" title="Delete App" @onclick="@((args) => DeleteApp((context as Index_Menu).MenuItemID))"><ic class="fad fa-trash-alt" /></div>
                                }
                            </Template>
                        </GridColumn>
                    </GridColumns>
                </TelerikGrid>
            </div>
            <div style="align-content:center; padding:5px; width: 100%; display: flex;  justify-content: center;  align-items: center;  ">
                <TelerikButton OnClick="@CancelWindow">CLOSE</TelerikButton>
            </div>
        </div>
    </WindowContent>
</TelerikWindow>