Based on the existing answers and question, it appears that you are having trouble running the madfish-solutions/tezos-multisig code. It appears that you are getting a compilation error when running the code.
One possible solution is to follow the instructions provided in the link provided in Answer 2. This link provides steps for setting up a Tezos multisig wallet. The instructions are detailed and should help you set up the wallet correctly.
Another possible solution is to reach out to the madfish-solutions team for assistance. They may be able to provide more detailed instructions or troubleshooting advice. You can contact them through their website or social media accounts.
Finally, it is important to note that this solution has not yet been audited. It is important to do your own research before using this code. Be sure to read through the documentation and do your own testing to make sure the code is safe to use.