C:\Users\ASUS\Documents\Arduino\libraries\FastLED/FastLED.h:12:2: warning: #warning FastLED version 3.001.000 (Not really a warning, just telling you here.) [-Wcpp]
#warning FastLED version 3.001.000 (Not really a warning, just telling you here.)
Yep, that shouldn’t be an issue. Just a harmless warning. More than anything, it’s to remind you if your libraries are outdated (though, I believe the Arduino IDE will tell you that too).