Show the actual error (for debugging) when using web3swift for RPC calls and it fails

AlphaWallet/Tokens/Coordinators/GetBalanceCoordinator.swift

@@ -54,7 +54,7 @@ class GetBalanceCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)(): \(error)"))))
         }
     }
 

AlphaWallet/Tokens/Coordinators/GetDecimalsCoordinator.swift

@@ -50,7 +50,7 @@ class GetDecimalsCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)(): \(error)"))))
         }
     }
 }

AlphaWallet/Tokens/Coordinators/GetERC721BalanceCoordinator.swift

@@ -45,7 +45,7 @@ class GetERC721BalanceCoordinator {
             let balances = self.adapt(balanceResult["0"])
             completion(.success(balances))
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)(): \(error)"))))
         }
     }
 

AlphaWallet/Tokens/Coordinators/GetERC875BalanceCoordinator.swift

@@ -40,7 +40,7 @@ class GetERC875BalanceCoordinator {
             let balances = self.adapt(balanceResult["0"])
             completion(.success(balances))
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contractInstance).\(function.name)() of \(address.eip55String) as ERC875"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contractInstance).\(function.name)() of \(address.eip55String) as ERC875: \(error)"))))
         }
     }
 

AlphaWallet/Tokens/Coordinators/GetIsERC721ContractCoordinator.swift

@@ -46,7 +46,7 @@ class GetIsERC721ContractCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)(): \(error)"))))
         }
     }
 }

AlphaWallet/Tokens/Coordinators/GetIsERC875ContractCoordinator.swift

@@ -44,7 +44,7 @@ class GetIsERC875ContractCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(function.name)(): \(error)"))))
         }
     }
 }

AlphaWallet/Tokens/Coordinators/GetNameCoordinator.swift

@@ -46,7 +46,7 @@ class GetNameCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)(): \(error)"))))
         }
     }
 }

AlphaWallet/Tokens/Coordinators/GetSymbolCoordinator.swift

@@ -45,7 +45,7 @@ class GetSymbolCoordinator {
                 completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
             }
         }.catch { error in
-            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)()"))))
+            completion(.failure(AnyError(Web3Error(description: "Error extracting result from \(contract.eip55String).\(functionName)(): \(error)"))))
         }
     }
 }