use player_api to register player model

3d_armor/init.lua

@@ -299,7 +299,7 @@ end
 
 -- Armor Player Model
 
-default.player_register_model("3d_armor_character.b3d", {
+player_api.register_model("3d_armor_character.b3d", {
 	animation_speed = 30,
 	textures = {
 		armor.default_skin..".png",

3d_armor/mod.conf

@@ -1,4 +1,4 @@
 name = 3d_armor
-depends = default
+depends = default, player_api
 optional_depends = player_monoids, armor_monoid, pova, fire, ethereal, bakedclay, moreores, nether
 description = Adds craftable armor that is visible to other players.