VIC Contract of Sale Cancelled - Who is Responsible?

I asked my conveyancers to prepare sect 32 for the sale of my house and settlement is due soon, however, the purchasers have issued a notice to rescind the contract of sale as they've advised that there is an undisclosed easement upon doing their own search of the water/asset search.

I've checked my sect 32 and my conveyancers did not include this - I just want to sell my property so I'm ok to cancel the contract and resell. However am I able to sue my conveyancers under negligence for the difference plus costs if I have resell for less and use a solicitor to draw up a new sect 32?

Oh thanks for pointing that out Rod, I forgot to mention that my conveyancers never discussed easements and just advised of their flat rate fee and how everything was included in the price such. E.g. searches so I assumed that they would've realized this and that's why they didn't ask me anything else about easements

Thank you Tim. I am in the process of finding a new legal rep for the sale of my property, however, in the event I resell for $5-$10K less can I sue the previous conveyancers in negligence for loss on resale, additional interest paid on my mortgage etc...?