Nested connect: Cannot read properties of null

[guydunton]

I think I've found an issue with nested connects in Prismock. If I run a nested connect through 2 other types then I get an undefined error. e.g.

prisma.address.update({
    where: {
      id: address.id,
    },
    data: {
      User: {
        update: {
          where: {
            id: userId,
          },
          data: {
            groups: {
              connect: [{ id: group1.id }],
            },
          },
        },
      },
    },
  });

// TypeError: Cannot read properties of null (reading 'undefined')

I've produced a minimal example: https://github.com/guydunton/prismock-nested-connects-issue