disease.lua

minetest.register_craftitem("medicine:toxic_apple", {
    description = "Toxic Apple",
    inventory_image = "toxic_apple.png",
    on_use = function (itemstack, user, pointed_thing)
        itemstack:take_item()
        
        local player_pos = user:get_pos()
        
        diseases.create_disease(user, "poisoning_disease", 
            time = { -- line:460
                st_time = 0, 
                expired_time = 0
            }, 
            disease_def = {
                physics_override = {
                    speed = 0.4, 
                    jump = 0.4
                }, 
                texture_change = "character_with_green_face.png", 
                healthbar_texture = "poisonous_heart.png", 
                particlespawner = {
                   particlespawner_id = "poisonous_particlespawner",
                   number = 4,
                   def = {
                       {1, 1, 1, 1},
                       {2, 2, 2, 2},
                       {{{player_pos.x + 0.2, player_pos.y + 1.5, player_pos.z + 0.2}, 
                         {player_pos.x - 0.2, player_pos.y + 1.5, player_pos.z - 0.2}, 
                         {player_pos.x - 0.2, player_pos.y + 1.5, player_pos.z + 0.2},
                         {player_pos.x + 0.2, player_pos.y + 1.5, player_pos.z - 0.2}
                        },
                        {{player_pos.x + 0.5, player_pos.y + 1.5, player_pos.z + 0.5},
                         {player_pos.x - 0.5, player_pos.y + 1.5, player_pos.z - 0.5},
                         {player_pos.x - 0.5, player_pos.y + 1.5, player_pos.z + 0.5},
                         {player_pos.x + 0.5, player_pos.y + 1.5, player_pos.z - 0.5}
                        }
                       },
                       {{{0, 0.2, 0}, 
                         {0, 0.2, 0}, 
                         {0, 0.2, 0},
                         {0, 0.2, 0}
                        },
                        {{0, 0.4, 0},
                         {0, 0.4, 0},
                         {0, 0.4, 0},
                         {0, 0.4, 0}
                        }
                       },
                       {{{0, 0.2, 0}, 
                         {0, 0.2, 0}, 
                         {0, 0.2, 0},
                         {0, 0.2, 0}
                        },
                        {{0, 0.4, 0},
                         {0, 0.4, 0},
                         {0, 0.4, 0},
                         {0, 0.4, 0}
                        }
                       },
                       {{2, 2, 2, 2},
                        {2, 2, 2, 2}
                       },
                       {{10, 10, 10, 10},
                        {12, 12, 12, 12}
                       },
                       {true, true, true, true},
                       {true, true, true, true},
                       {"poisonous_effect.png", "poisonous_effect.png", "poisonous_effect.png", "poisonous_effect.png"},
                       {user:get_player_name(), user:get_player_name(), user:get_player_name(), user:get_player_name()}
                 }
              },
              damage_params = {
                  time = 20,
                  interval = {min = 2, max = 5}, 
                  amount = {min = 1, max = 3}
              }
          })
        return itemstack
    end
})

I got an error after function call:
"Failed to load and run script from /home/user/opt/minetest/bin/../mods/medicine/init.lua:
/home/user/opt/minetest/bin/../mods/medicine/diseases.lua:460: ')' expected (to close '(' at line 459) near '=' stack traceback:
[C]:in function 'dofile'"