Learn Russian: В цепочке поставок произошёл серьёзный сбой. - A serious disruption occurred in the supply chain.

In Russian, sentence structure often flows from the established context to the new information, placing the most important 'news' at the very end. Since the occurrence of the disruption is the core news being announced here, the subject (серьёзный сбой) naturally goes at the end of the sentence.

What is the nominative singular of поставок, and why does it have an 'о' in it here?

The dictionary form is поставка (delivery or supply). In the phrase 'chain of supplies' (цепочка поставок), it takes the genitive plural. The 'о' is a fleeting vowel inserted to break up the awkward consonant cluster 'вк' at the end of the word, making it поставок instead of 'поставк'.

How is сбой different from general words for 'problem' like проблема or ошибка?

Сбой specifically refers to a malfunction, glitch, or disruption in an ongoing process or mechanical/IT system. While ошибка is a human error and проблема is a general problem, сбой is used for system crashes, rhythm irregularities, or, as in this sentence, a breakdown in a logistical chain.

How would I use the lesson's target grammar to say 'Due to a serious disruption in the supply chain...'?