Crystal's API returns 500 error and log in to the platform ends up with failure

This incident affected: Backend (Crystal Expert API, Crystal Public API, Offchain App, Altcoin App), Currencies (ADA, BCH, BSC, BTC, DOT, ETC, ETH, MATIC, LTC, TRX, XLM, XRD, XRP), and Frontend (Crystal Expert Web, Crystal Public Web).