Why I got "failed to load all assets" only on production and my app crashes by "app not responding"

My project works fine on a development mode but as soon as I test for production it failed with “failed to load all assets” error. The thing is, it takes about 70 seconds to bundles the assets which is the root of this problem. My assets are only about 100kb. I don’t think that’s the case. Please help me to fix this guys I stuck there :relieved: