Investigate Newman error messages reason during collection run

Newman is reporting errors during collection run such as following

for some of the test while Postman does not print any warnings.

Examples of the requests which are failed:

• "configuration / GET Configuration / Positive / GET Configuration - when configuration is valid"

• "configuration / PUT Configuration / Negative / PUT Configuration - when fields are missing"

As for schemas which are missing - they can vary from run to run.