A bot is usually meant as a program that follows a particular set of rules.
Hallucination usually means: perceiving something that is not present.
But when applied to chat bots it means: confidently responding with incorrect information.
The usual meaning of hallucination is generally applied to humans or other animals which perceive the world around them. In that meaning hallucination is innately organic, since all animals are organic.
Since words can take on different meanings, we can say that other entities can experience hallucination as long as we explain what we mean by that to others.
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