I got issue with rendering the euro sign:
thread 'tokio-runtime-worker' (160637) panicked at /home/milend/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tera-1.20.1/src/context.rs:281:46:
byte index 16 is not a char boundary; it is inside '€' (bytes 14..17) of "Net Revenue (€)"
Let me know if you need more context.