Merge pull request #2299 from keep-network/fix-lp-rewards-staking

Fix creating the wrapped token of the LPRewards

Store in the LPRewardsToWrappedTokenCache address of the wrapped token instead
of the web3 contract instance. In case the web3 provider has changed. This PR
also fixes the No "from" address... error on staking in LPRewards.

Author: michalsmiarowski

solidity/dashboard/src/services/liquidity-rewards.js

@@ -12,7 +12,7 @@ import { add } from "../utils/arithmetics.utils"
 /** @typedef {import("web3").default} Web3 */
 /** @typedef {LiquidityRewards} LiquidityRewards */
 
-// lp contract address -> wrapped ERC20 token as web3 contract instance
+// lp contract address -> wrapped ERC20 token as address
 const LPRewardsToWrappedTokenCache = {}
 const WEEKS_IN_YEAR = 52
 
@@ -214,11 +214,14 @@ export class LiquidityRewardsFactory {
         .call()
       LPRewardsToWrappedTokenCache[
         lpRewardsContractAddress
-      ] = createERC20Contract(web3, wrappedTokenAddress)
+      ] = wrappedTokenAddress
     }
 
-    const wrappedTokenContract =
+    const wrappedTokenContract = createERC20Contract(
+      web3,
       LPRewardsToWrappedTokenCache[lpRewardsContractAddress]
+    )
+
     const PoolStrategy = LiquidityRewardsPoolStrategy[pool]
 
     return new PoolStrategy(wrappedTokenContract, LPRewardsContract, web3)