animate 2020-animation problem with the "bones" tool

Hello,
I animated 2 characters (in vector) that I bought in an image bank and that I reworked a little (simplified) with AI and I animate a walking session from left to right with the tool "bones". These characters were imported in pieces (head, body, arms, etc.) via copy / paste from AI to ANIMATE. When I view the walking animations internally in the scenario, everything works fine but when I view them in the browser (Chrome), the left (rear) leg of my 2 characters does not move and I notice that it is the same problem for both.
Some post-post error messages include "Changing the transformation point in an interpolation may produce unexpected results. (22)".
Can you help me ?