Http error 500.19 - internal server

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HTML

web.config

Im getting this error, thank you in advance for your help.

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information:

Module

IIS Web Core

Notification

Unknown

Handler

Not yet determined

Error Code

0x80070032

Config Error

The configuration section 'defaultDocument' cannot be read because it is missing a section declaration

Config File

\\?\E:\isrintranet\web.config

Requested URL

https://mywebsite.com/

Physical Path



Logon Method

Not yet determined

Logon User

Not yet determined

Config Source:

11:

12: <defaultDocument>

13: <files>

More Information:

What I have tried:

my web.config
===================================================================

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
	<appSettings>
    </appSettings>
	<connectionStrings/>
	
	
	<!--<compilation debug="false"/>
	
	<authentication mode="Windows" />-->
  
        <defaultDocument>
            <files>
                <add value="default.html" />
            </files>
        </defaultDocument>
        <directoryBrowse enabled="false" showFlags="Extension" />
        <httpRedirect enabled="false" destination="" exactDestination="true" childOnly="false" httpResponseStatus="Found" />
        <httpErrors>
            
        </httpErrors>
        <caching>
            <profiles>
                <remove extension=".pdf" />
                <add extension=".pdf" policy="CacheUntilChange" kernelCachePolicy="CacheUntilChange" duration="00:00:30" />
            </profiles>
        </caching>
        <security>
            <requestFiltering allowHighBitCharacters="false">
                <fileExtensions allowUnlisted="false">
                    <remove fileExtension=".config" />
                    <add fileExtension=".html" allowed="true" />
                    <add fileExtension=".htm" allowed="true" />
                    <add fileExtension=".docx" allowed="true" />
                    <add fileExtension=".doc" allowed="true" />
                    <add fileExtension=".docm" allowed="true" />
                    <add fileExtension=".dotm" allowed="true" />
                    <add fileExtension=".docb" allowed="true" />
                    <add fileExtension=".xls" allowed="true" />
                    <add fileExtension=".xlt" allowed="true" />
                    <add fileExtension=".xlm" allowed="true" />
                    <add fileExtension=".xlsx" allowed="true" />
                    <add fileExtension=".xlsm" allowed="true" />
                    <add fileExtension=".xltx" allowed="true" />
                    <add fileExtension=".xltm" allowed="true" />
					<add fileExtension=".lnk" allowed="true" />
                    <add fileExtension=".ppt" allowed="true" />
                    <add fileExtension=".pot" allowed="true" />
                    <add fileExtension=".pps" allowed="true" />
                    <add fileExtension=".pptx" allowed="true" />
                    <add fileExtension=".pptm" allowed="true" />
                    <add fileExtension=".potx" allowed="true" />
                    <add fileExtension=".potm" allowed="true" />
                    <add fileExtension=".ppam" allowed="true" />
					<add fileExtension=".mpg" allowed="true" />
					<add fileExtension=".wmv" allowed="true" />
                    <add fileExtension=".ppsx" allowed="true" />
                    <add fileExtension=".ppsm" allowed="true" />
                    <add fileExtension=".sldx" allowed="true" />
                    <add fileExtension=".sldm" allowed="true" />
                    <add fileExtension=".pub" allowed="true" />
					<add fileExtension=".pdf" allowed="true" />
                    <add fileExtension=".mil" allowed="true" />
                    <add fileExtension=".css" allowed="true" />
                    <add fileExtension=".js" allowed="true" />
                    <add fileExtension=".jpg" allowed="true" />
                    <add fileExtension=".png" allowed="true" />
                    <add fileExtension=".gif" allowed="true" />
                    <add fileExtension=".tif" allowed="true" />
                    <add fileExtension=".tiff" allowed="true" />
                    <add fileExtension=".aspx" allowed="true" />
                    <add fileExtension=".jpeg" allowed="true" />
                </fileExtensions>
                <alwaysAllowedUrls>
                    <add url="" />
                    <add url="" />
                </alwaysAllowedUrls>
                <verbs allowUnlisted="true" />
            </requestFiltering>
            <authorization>
                <remove users="" roles="Adminisrators" verbs="" />
                <add accessType="Allow" users="*" roles="" />
            </authorization>
        </security>
    </system.webServer>
    <system.web>
        <trust level="Medium" />
		<section name="uri" type="System.Configuration.UriSection" />
    </system.web>
</configuration>