petty foibles has two words, so divide them and you get petty, foibles, Petty is given these definitions;.
1 : having secondary rank or importance : minor , subordin…ate .
2 : having little or no importance or significance.
3 : marked by or reflective of narrow interests and sympathies : simpleminded .
So guessing that 2 is the one we need, we now get no significant foibles..
Foibles can be defined as in these two instances;.
1 : the part of a sword or foil blade between the middle and point.
2 : a minor flaw or shortcoming in character or behavior : weakness .
so, now we can equate that it is probably translated into;.
"No significant shortcoming". (MORE)