Warning in the Matchit package (“Glm.fit: fitted probabilities numerically 0 or 1 occurred”) How to deal with that?

I’m running a code with around 200.000 observations, where 10.000 were treated and the remaining I’m trying to match using the package MatchIt. Because of one of these variables, there is a warning message appearing and I don’t know if I should just ignore it or not. The message is: Glm.fit: fitted probabilities numerically 0…

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