Is it possible that technologically-capable, spacefaring species would depend on a single source of food?

In my world, an intelligent species has evolved to the point of space travelling. However, this species can eat only one single type of food (which is a product of another species on its planet).

It cannot use any other species as food, and it cannot artificially create food which is equivalent, despite having technological abilities.

Is this situation possible? What kind of evolutionary/biological/technological conditions would possibly result in such scenario?

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Is it possible that technologically-capable, spacefaring species would depend on a single source of food?

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