try without onlyOwner

contracts/src/management/ManagementContract.sol

@@ -156,7 +156,7 @@ contract ManagementContract is Initializable, OwnableUpgradeable {
     }
 
     // Function to set an important contract's address, only callable by owner
-    function SetImportantContractAddress(string memory key, address newAddress) public onlyOwner {
+    function SetImportantContractAddress(string memory key, address newAddress) public {
         if (importantContractAddresses[key] == address(0)) {
             importantContractKeys.push(key);
         }