"If the description in the meta data doesn’t describe the contents of the article, your template must create a description using the subtitle or lead section, first paragraph, etc."

There is many articles with description "Український текст" ("Ukrainian text") which is meaningless, set by error and must be replaced with first/lead paragraph

It is not one-off case, check any of these pages:
https://tehnot.com/ua/v-moskve-testiruyut-bespilotnyj-elektricheskij-avtobus-matryoshka/
https://tehnot.com/ua/google-docs-nauchilsya-raspoznavat-rech/
https://tehnot.com/ua/entuziasty-uznali-chto-vnutri-microsoft-hololens/
https://tehnot.com/ua/kitajskij-gigant-gotovit-superflagman-s-8-gigabajtami-ozu/
https://tehnot.com/ua/novaya-nvidia-titan-x-budet-stoit-1200-dollarov/
https://tehnot.com/ua/dlya-samsung-galaxy-s7-predstavleny-ofitsialnye-aksessuary/
https://tehnot.com/ua/ofitsialno-samsung-gotovit-bet-mobilu/

Another pages: https://telegra.ph/Some-more-links-04-25