LovyanGFX library not working anymore (ESP-32)

Question

I am trying to restore an old project and make a code that used to run compile again. However, I am always getting this error, which is from the LovyanGFX graphics library:

Compilation error: 'LGFX_SPI' in namespace 'lgfx' does not name a template type

The line causing the error is this: static LGFX lcd;

This problem also occurs with all included examples of the library without me modifying anything.

Any help appreciated!