As I verify the code in Arduino IDE, an error appears stating "Can't open sketch: main file missing from sketch: S:\My Drive\CANSAT\sketch_aug9a\sketch_aug9a\sketch_aug9a.ino".
How to check the main file and resolve it?
please, please never ever again post pictures of text... Not only they are not readable nor usable directly for copy&paste but they use up lots of storage and internet bandwidth which contributes to polluting the planet.
➜ do your part and do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation for your ask).
if your main sketch file is named abcd.ino it should be in a directory called abcd