"Russian gas export monopoly Gazprom has declared force majeure on gas supplies to Europe to at least one major customer starting June 14, according to the letter seen by Reuters." The letter is dated July 14. "It said the force majeure measure, a clause invoked when a business is hit by something beyond its control, was effective from deliveries starting from June 14," writes Reuters.
The letter invoked "extraordinary" circumstances outside the company's control, Reuters continues, citing a source saying the customer in question is Germany via the Nord Stream 1 pipeline

It seems this letter declaring its legal release from supply obligations going back to June 14 is in preparation for definitive action on July 22, namely that the pipeline's operations are likely to remain suspended past the scheduled reboot/supply back online designated date.
Simply put, Gazprom declared extraordinary and extreme circumstances to void itself from all contractual obligations to this customer, thus the gas will stop flowing indefinitely