I’m running my collection twice: 1.) from browser and 2.) with Newman. Why in the first case the collection is submitted and there are no failed tests and in the case with Newman there are some failed cases?
This is covered in the instructions\documentation.
The first time you run this, its against the whole collection and will have some errors because its also running the submit collection request.
The documentation then tells you to to “Run the command again, this time adding the option --folder [folderName] to the end, to specify the first folder to run from the collection”.