What does this error mean?

[Member]

How do I fix this error to build my project?

[Javier1]

no idea BUT have you tried rightclikc>Clean project and rightClick>Build project

?

[Markus GIRDLAND]

Hello!

When the error mentions the file 'stm32_lpm.c' does that file exist in the directory the error message says?

If you go to that directory, what is there? If anything?

Which firmware package and board are you using? I tried with C:\Users\USER\STM32Cube\Repository\STM32Cube_FW_WB_V1.11.1\Projects\P-NUCLEO-WB55.Nucleo\Applications\BLE\BLE_p2pServer but I wasn't able to reproduce the build error.