update version

contracts/mainnet/common/interfaces.sol

@@ -1,6 +1,6 @@
 //SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
-pragma abicoder v2;
+pragma experimental ABIEncoderV2;
 
 interface TokenInterface {
     function approve(address, uint256) external;

contracts/mainnet/connectors/morpho-blue/events.sol

@@ -1,6 +1,6 @@
 //SPDX-License-Identifier: MIT
-pragma solidity ^0.8.0;
-// pragma experimental ABIEncoderV2;
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
 
 contract Events {
 

contracts/mainnet/connectors/morpho-blue/helpers.sol

@@ -1,6 +1,6 @@
 //SPDX-License-Identifier: MIT
-pragma solidity ^0.8.0;
-// pragma experimental ABIEncoderV2;
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
 
 import "./interface.sol";
 import "../../common/stores.sol";
@@ -35,7 +35,7 @@ abstract contract Helpers is Stores, Basic {
     uint256 internal constant MARKET_PARAMS_BYTES_LENGTH = 5 * 32;
 
     /// @notice Returns the id of the market `marketParams`.
-    function id(MarketParams memory marketParams) internal pure returns (Id marketParamsId) {
+    function id(MarketParams memory marketParams) internal pure returns (bytes32 marketParamsId) {
         assembly {
             marketParamsId := keccak256(marketParams, MARKET_PARAMS_BYTES_LENGTH)
         }

contracts/mainnet/connectors/morpho-blue/interface.sol

@@ -1,7 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
-pragma solidity ^0.8.0;
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
 
-type Id is bytes32;
+// type Id is bytes32;
 
 struct MarketParams {
     address loanToken;
@@ -59,6 +60,6 @@ interface IMorpho {
 
 	function withdrawCollateral(MarketParams memory marketParams, uint256 assets, address onBehalf, address receiver) external;
 
-	function position(Id id, address user) external view returns(Position memory);
+	function position(bytes32 id, address user) external view returns(Position memory);
 }
 

contracts/mainnet/connectors/morpho-blue/main.sol

@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: MIT
-pragma solidity ^0.8.0;
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
 
 import "./helpers.sol";
 import "./events.sol";
@@ -208,7 +209,7 @@ abstract contract MorphoBlue is Helpers, Events {
 
 		uint256 _amt = getUint(_getId, _assets);
 		if (_amt == uint256(-1)) {
-			Id _id = id(_marketParams); 
+			bytes32 _id = id(_marketParams); 
 			Position memory _pos = MORPHO_BLUE.position(_id, _onBehalf);
 			_amt = _pos.collateral;
 		}
@@ -255,8 +256,8 @@ abstract contract MorphoBlue is Helpers, Events {
 			bool _isMax
 		) = _performEthToWethConversion(_marketParams.loanToken, _assets, _getId);
 		if (_isMax) {
-			Id _id = id(_marketParams); 
-			Position memory _pos = MORPHO_BLUE.position(_id, _onBehalf);
+			bytes32 _id = id(_marketParams); 
+			Position memory _pos = MORPHO_BLUE.position(_id, address(this));
 			_amt = _pos.collateral;
 		}
 		address originToken = _marketParams.loanToken;