#minecraft:sand tag has two minecraft:suspicious_sand

The #minecraft:sand tag has two items set to "minecraft:suspicious_sand". This leads to no problem, though.

<version jar>\data\minecraft\tags\items\sand.json:

{
  "values": [
    "minecraft:sand",
    "minecraft:red_sand",
    "minecraft:suspicious_sand",
    "minecraft:suspicious_sand"
  ]
}