Thank you for your response. I checked very carefully the spelling and all details, but i could not find the solution. Browsing this forum i found the same issue (link: Postman 30 Day Challange Day 06 - Why do tests 4 and 5 FAIL? - #2 by kevinc-postman). And it helped only by changing the collectionsUid address. It worked for this id: 28602018-b4d5e3ad-ac01-42d8-a145-3e31efcbaac6. But in documentation i found this id:
