Hey guys i have a big problem with the platformio is about the libreriry the code not work

i type the code but this not works not chnge of color the color appear in withe with the error below as a bad typin help me please

This is a spellchecker…

Yes it is how i can solved this issue
I need prety soon begain with this …

Please change extension from cp.p to cpp. You have mistake.

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ok i will tell you !!

Aready changed the name .But same happens appear the spellcheker when i try develop my code