Issue with deployProxy using openzeppelin-foundry-upgrades

Smart Contracts
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1

I'm having trouble testing deployment of my contract that links an external library.

when I run forge clean && forge test --ffi --via-ir -vvv , I get this output:
[FAIL. Reason: setup failed: data did not match any variant of untagged enum Bytecode at line 1 column 95970] setUp()

I have tried:
enabling the options flag for external-library-linking
verifying the build info with this command (SUCCESS):
forge clean && forge build && npx @openzeppelin/upgrades-core@^1.31.0 validate out/build-info --contract PoolManager
writing the annotation

/// @custom:oz-upgrades-unsafe-allow external-library-linking

contract PoolManager is ...

Below is my setup code:
//test/PoolManager.t.sol

    function setUp() public {
        pixelMerkle = new PixelMerkle(address(this));
        pixelOracle = new PixelOracle(address(pixelMerkle));
        weth = new WETH();
        Options memory options;
        options.unsafeAllow = "external-library-linking";
        address proxy = Upgrades.deployUUPSProxy(
            "PoolManager.sol:PoolManager",
            abi.encodeCall(PoolManager.initialize, (address(pixelOracle), address(weth))),
            options
        );

in the PoolManager.sol file here is my deployment code:


    function initialize(address _oracle, address _WETH) public payable initializer {
        oracle = _oracle;
        WETH = _WETH;
        __Ownable_init(msg.sender);
        __ReentrancyGuard_init();
    }

    function _authorizeUpgrade(address newImplementation) internal override onlyOwner { }

I dont have a constructor in my contract, just trying to deploy.
Have I got things setup correctly? I would appreciate any help, thanks!