SQLite DB failed to load after polling rate

This. Use a real database. A SQLite DB, fundamentally, is a generic configuration file manipulated with SQL. Its codebase is optimized for compact single file storage and a minimalist library footprint. It is not and never will be suitable for Tag History in any ordinary sense.

If you want maximum utility in a free database, I recommend PostgreSQL. I think MariaDB is also a good choice.

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