Logging EnvoyFilter WASM extension

We have successfully deployed a WASM extension (C++) with an EnvoyFilter.

In the C++ code we added a log instruction:

logInfo(std::string(“some_log_here”));

but no log is written, despite we are sure the WASM (C++) is executed (it adds a custom header in the response and we actually see it).

Is there a way to enable logging of a WASM (C++) extension?