Strange Beahviour during build process

Hello all,

I got this error since this morning…

xtensa-esp32-elf-g++: fatal error: no input files
compilation terminated.
sh: 1: -Ibsesp: not found
Building .pio/build/ESP32/bootloader.bin
*** [.pio/build/ESP32/partitions.bin] Source `min_spiffs.csv;' not found, needed by target `.pio/build/ESP32/partitions.bin'.
*** [.pio/build/ESP32/src/bsesp_watering.ino.cpp.o] Error 127

What do I need to do?

What’s the content of your platformio.ini?
Is it a blank new project or an exising one?