Hello
I am doing a logistic regression model but I have this error message and I do not understand its meaning.

logistic ADVISERSPEAKERannonceur i.HDRS1724weekspostdisclosure i.INFANTSTATUS i.Familyimpact i.ADHERENCEBEFOREDISCLOSURE
outcome does not vary; remember:
0 = negative outcome,
all other nonmissing values = positive outcome
r(2000);

And also how to get the odds ratio in a 2X2 contigence table.
Thank you