Hello there, we (lease holder) contracted with our GC for a full build out of our restaurant. After the build out finished we received unconditional lien waiver from our GC (that also clarifies material men). But a sub contractor of the plumbing company (plumbing company filed for bankruptcy) that our GC used sent a notice to the property owner regarding unpaid dues and have mentioned that they will file Lien on property. Property owner said it will be on us to pay the amount (because how the lease agreement was done). We have already paid our GC and he is not willing to help us on this. What are our legal avenue?