`/home/fabian/.platformio/packages/framework-espidf/components/mbedtls/port/esp32/esp_bignum.c:254:5: error: no previous prototype for 'esp_mpi_mul_mpi_mod' [-Werror=missing-prototypes] int esp_mpi_mul_mpi_mod(mbedtls_mpi *Z, const mbedtls_mpi *X, const mbedtls_mpi *Y, const mbedtls_mpi *M) ^~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors *** [.pio/build/RAI/esp-idf/mbedtls/port/esp32/esp_bignum.c.o] Error 1 `