Deploy a flutter project on AppStore

Hi,
I have a flutter project that is currently deployed to Android Studio. I want to deploy it to AppStore but could not do it because of lack of knowledge and also an error reported by apple saying it's crashing.

I will need someone who can fix the crash error and deploy it to appstore.

Please submit answer of 7 multiplied by 4 on your proposal so that I can be sure you have read this.

1.0 Binary Rejected - Aug 8, 2021
Guideline 2.1 - Performance - App Completeness We were unable to review your app as it crashed on launch. We have attached detailed crash

We were unable to review your app as it crashed on launch. We have attached detailed crash logs to help troubleshoot this issue.

Review device details:

- Device type: iPhone and iPad
- OS version: iOS 14.7.1

Next Steps

To address the crash in your app, follow these steps:

1. Fully symbolicate the crash report. See Adding Identifiable Symbol Names to a Crash Report for an explanation of the symbolication process.
2. Match the crash report to a common pattern. Based on the pattern, take specific actions to further investigate the crash. See Identifying the Cause of Common Crashes.
3. Test your app on a device to ensure that it now runs as expected.
4. Once you’ve addressed the crash, create and submit a new build to the App Store for review.