Pkg installation package uploaded to macstore email prompt ITMS-90296

Hello! I encountered an issue while packaging and uploading the project to the Mac store. I received an email stating:

ITMS-90296: App Sandbox not enabled - The following executors must include the 'com. apple. security. app sandbox' entitlement with a Boolean value of true in the entitlement property list: [[com. electron. iflyrecclient. pkg/Payload/iFlytek Listen. app/Contents/MacOS/iFlytek Listen]] Refer to App Sandbox page at https://developer.apple.com/documentation/security/app_sandbox for more information on sandboxing your app. Though you are not required to fix the following issues, we wanted to make you aware of them: ITMS-90886: 'Cannot be used with TestFlight because the signature for the bundle at' iFlytek hears. app 'is missing an application identifier but has an application identifier in the provisioning profile for the bundle.' Bundles with application identifiers in the provisioning profile are expected to have the same identifier signed into the bundle in order to be eligible for TestFlight.'

But in my memory, the sandbox was set to true. I have also tried the methods in the forum, but they have not been resolved，I hope you can help me see what happened. Here are the specific situations I developed,

1. This project is built and developed using electron9;
2. The entire project was not developed using Xcode;
3. The specific process of packaging into pkg is as follows:

Step 1: Use an electron packager to package the app file

Step 2: Use electron/osx sign to sign the entire app file (with options such as entitlement and provisioning profile configured)

Step 3: Use the productbuild -- component Yourappname. app/Applications -- sign "3rd Party Mac Developer Installer: *** *** (XXXXXXXXXX)" Yourappname. pkg command to generate the pkg package

Step 4: Upload to transporter The above operations were executed normally, and after the second step of signing, using the codesign dvvv -- entities -<path to your app>provided on the official website to query also showed that the sandbox was true. However, after the upload was successful, you will receive an email showing an issue, and the corresponding uploaded version cannot be found on the app connect website

Hope to receive your answer. Wishing you good health and smooth work! PS: When generating the app, there is no sandbox related configuration in Info.Plist in the app content package. Is this normal? I checked the info.Plist of Google Chrome, Sogou Input Method and other software, and there is no sandbox configuration. Moreover, I tried manually adding it and then packaging it, but also encountered the same email problem.