Agreeing with
@tonybot - you can tell from the relatively small diameter of the round plastic face that it's not a heavy-duty industrial/EV-rated receptacle.
Light-duty 14-50 receptacles have a 2.1 inch diameter face, nearly the same width as the distance between the visible cover plate screws above it. Industrial/EV 14-50 receptacles have a 2.4 inch diameter face, noticeably wider than the mounting screw spacing.
Even it it's not the problem today, if your receptacle has a 2.1-inch face, it needs to be replaced ASAP with the right type of 14-50R and a matching cover plate.