iOS ad-hoc distributed app with link not working

I'm trying to create an ad-hoc IPA distribution for an iOS app. I did that by going to Xcode > Product > Archive I followed this link

However I'm getting below error "(null)" is Already installed "(null)" has the same bundle id as (null).. If I drag IPA file directly via Itunes it works fine.

I created an html file with manifest link. It's an https link (on local server with certificates created by openssl)

html file code below

<a href='itms-services://?action=download-manifest&url=https://myhost/files/manifest.plist'>Download IPA</a>

Manifest file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>items</key>
    <array>
        <dict>
            <key>assets</key>
            <array>
                <dict>
                    <key>kind</key>
                    <string>software-package</string>
                    <key>url</key>
                    <string>https://myhost/files/ios app.ipa</string>
                </dict>
                <dict>
                    <key>kind</key>
                    <string>display-image</string>
                    <key>url</key>
                    <string>https://myhost/files/image.57x57.png</string>
                </dict>
                <dict>
                    <key>kind</key>
                    <string>full-size-image</string>
                    <key>url</key>
                    <string>https://myhost/files/image.512x512.png</string>
                </dict>
            </array>
            <key>metadata</key>
            <dict>
                <key>bundle-identifier</key>
                <string>com.company.ios-app</string>
                <key>bundle-version</key>
                <string>1.0</string>
                <key>kind</key>
                <string>software</string>
                <key>platform-identifier</key>
                <string>com.apple.platform.iphoneos</string>
                <key>title</key>
                <string>ios app</string>
            </dict>
        </dict>
    </array>
</dict>
</plist>

Just remove space " " in software-package name replace

<string>https://myhost/files/ios app.ipa</string>

with

<string>https://myhost/files/iosapp.ipa</string>

This fixed for me.