In Chopin's Premiere Ballade in g minor, my music has an F on the 1st beat

of measure 49. Should it be G? On the first beat of measure 49 in my music, there is an F and C. This whole section is a sequence that happens over and over again, but when the sequence repeats, this particular chord is always G and C. So I'm wondering if my music has a typo. Does your music say the same thing as mine? Is my question even comprehensible?
 
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