無錯，因為今次我係冇Plan㗎～
No, because I don't have a plan this time.

Cantonese Sentence Breakdown

無錯 mo4 co3
Correct
因為 jan1 wai6
due to
今次 gam1 ci3
this time
我 ngo5
I
me
my
us
we
our
self
係 hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
冇 mo5
to not have (Cantonese)
Mandarin equivalent: 没有méiyǒu [没有]
㗎 gaa3/ gaa4
sentence-final particle, contraction of "嘅呀" (Cantonese), to express doubt
reservation
emphasis
disapproval
see also 嘅kài [嘅]