getVaultOwners() does not work

[aparnakr]

getVaultOwners() may run out of gas if there are a large number of vault owners. This may make it difficult (or impossible if you don't have access to your own ethereum node with a custom configured high gas limit) to figure out who the vault owners are in order for someone trying to exercise to do the exercise.

It is recommended to query https://thegraph.com/explorer/subgraph/aparnakr/opyn to get all the vault owners instead of calling the function from the contract.