I need help understanding this error ci 4.3.7

Note:

PHP allows shortcuts for byte values, including K (kilo), M (mega) and G (giga). PHP will do the conversions automatically
if you use any of these. Be careful not to exceed the 32 bit signed integer limit (if you're using 32bit versions) as it will
cause your script to fail.

What did you Try? What did you Get? What did you Expect?

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