NMEA2000_esp does not compile.

[dfs-brent]

I had to comment out the following lines from the NMEA2000_esp.cpp to get it to compile:
Line 124: ///periph_module_reset(PERIPH_CAN_MODULE);
Line 128: ///DPORT_SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_CAN_CLK_EN);
Line 129: ///DPORT_CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_CAN_RST);
Line 194: ///esp_intr_alloc(ETS_CAN_INTR_SOURCE,0,ESP32Can1Interrupt,NULL,NULL);

It does not know what the CAN macros are. Obviously, it will not work without these lines. Any idea how to fix this properly?