I can't download Minecraft Bedrock from PlayStation Store. A message appears that says "Minecraft already belongs to you"

I can't download Minecraft Bedrock from PlayStation Store. A message appears that says "Minecraft already belongs to you". I only have the trial version of the old Minecraft (Minecraft: PlayStation 4 Edition) installed before the new Minecraft came out. I don't know why I can't download it. Is it a bug?