Как это понять?

Каюсь, давно Марлин настраивал...))

При компиляции, дал 2 ошибки, как их понять?

Вроде все правильно, и да, не надо в меня кидать...))) 

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Compiling .pio\build\LPC1768\src\src\inc\Warnings.cpp.o

Compiling .pio\build\LPC1768\src\src\lcd\HD44780\lcdprint_hd44780.cpp.o

Marlin\src\inc\Warnings.cpp:738:6: warning: #warning "Motherboard DIAG jumpers must be removed when SENSORLESS_HOMING is disabled. (Define DIAG_JUMPERS_REMOVED to suppress this warning.)" [-Wcpp]

  738 | #warning "Motherboard DIAG jumpers must be removed when SENSORLESS_HOMING is disabled. (Define DIAG_JUMPERS_REMOVED to suppress this warning.)"

      | ^~~~~~~

Marlin\src\inc\Warnings.cpp:805:4: warning: #warning "Input Shaping for CORE / MARKFORGED kinematic axes is

still experimental." [-Wcpp]

  805 | #warning "Input Shaping for CORE / MARKFORGED kinematic axes is still experimental."

      | ^~~~~~~

Compiling .pio\build\LPC1768\src\src\lcd\HD44780\marlinui_HD44780.cpp.o