From the website:
As a result of a national strike notice, the performances of Wednesday 29 January might be affected.
Do not hesitate to check our website regularly: operadeparis.fr.
I attended this today in Paris and it truly was glorious. Like 1848. https://t.co/aNl57Y9Tyn
— Vladislav Davidzon (@VladDavidzon) January 28, 2020