Add caluse for abi_decode_address_output/1 when is_nil(address)

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Features
 
 ### Fixes
+- [#4038](https://github.com/blockscout/blockscout/pull/4038) - Add clause for abi_decode_address_output/1 when is_nil(address)
 - [#3989](https://github.com/blockscout/blockscout/pull/3989), [4061](https://github.com/blockscout/blockscout/pull/4061) - Fixed bug that sometimes lead to incorrect ordering of token transfers
 - [#3946](https://github.com/blockscout/blockscout/pull/3946) - Get NFT metadata from URIs with status_code 301
 - [#3888](https://github.com/blockscout/blockscout/pull/3888) - EIP-1967 contract proxy pattern detection fix

apps/explorer/lib/explorer/chain.ex

@@ -6086,6 +6086,8 @@ defmodule Explorer.Chain do
     end)
   end
 
+  defp abi_decode_address_output(address) when is_nil(address), do: nil
+
   defp abi_decode_address_output(address) do
     if String.length(address) > 42 do
       "0x" <> String.slice(address, -40, 40)