fix safe loading by awaiting .at function

src/logic/contracts/safeContracts.js

@@ -76,7 +76,7 @@ export const deploySafeContract = async (safeAccounts: string[], numConfirmation
 export const getGnosisSafeInstanceAt = async (safeAddress: string) => {
   const web3 = getWeb3()
   const GnosisSafe = await getGnosisSafeContract(web3)
-  const gnosisSafe = GnosisSafe.at(safeAddress)
+  const gnosisSafe = await GnosisSafe.at(safeAddress)
 
   return gnosisSafe
 }

src/logic/safe/safeFrontendOperations.js

@@ -26,7 +26,8 @@ const hasOneOwner = (safe: Safe) => {
 export const getSafeEthereumInstance = async (safeAddress: string) => {
   const web3 = getWeb3()
   const GnosisSafe = await getGnosisSafeContract(web3)
-  return GnosisSafe.at(safeAddress)
+  const safeInstance = await GnosisSafe.at(safeAddress)
+  return safeInstance
 }
 
 export const createTransaction = async (

src/routes/load/components/DetailsForm/index.jsx

@@ -47,7 +47,7 @@ export const safeFieldsValidation = async (values: Object) => {
   // https://solidity.readthedocs.io/en/latest/metadata.html#usage-for-source-code-verification
   const metaData = 'a165'
 
-  const code = await promisify(cb => web3.eth.getCode(safeAddress, cb))
+  const code = await web3.eth.getCode(safeAddress)
   const codeWithoutMetadata = code.substring(0, code.lastIndexOf(metaData))
 
   const proxyCode = SafeProxy.deployedBytecode
@@ -63,7 +63,7 @@ export const safeFieldsValidation = async (values: Object) => {
   // check mastercopy
   const proxy = contract(SafeProxy)
   proxy.setProvider(web3.currentProvider)
-  const proxyInstance = proxy.at(safeAddress)
+  const proxyInstance = await proxy.at(safeAddress)
   const proxyImplementation = await proxyInstance.implementation()
 
   const safeMaster = await getSafeMasterContract()

src/routes/load/components/ReviewInformation/index.jsx

@@ -62,6 +62,8 @@ class ReviewComponent extends React.PureComponent<Props, State> {
     isOwner: false,
   }
 
+  mounted = false
+
   componentDidMount = async () => {
     this.mounted = true
 
@@ -70,7 +72,7 @@ class ReviewComponent extends React.PureComponent<Props, State> {
     const web3 = getWeb3()
 
     const GnosisSafe = getGnosisSafeContract(web3)
-    const gnosisSafe = GnosisSafe.at(safeAddress)
+    const gnosisSafe = await GnosisSafe.at(safeAddress)
     const owners = await gnosisSafe.getOwners()
     if (!owners) {
       return
@@ -86,8 +88,6 @@ class ReviewComponent extends React.PureComponent<Props, State> {
     this.mounted = false
   }
 
-  mounted = false
-
   render() {
     const { values, classes, network } = this.props
     const { isOwner } = this.state

src/routes/load/components/fields.js

@@ -1,4 +1,3 @@
 // @flow
 export const FIELD_LOAD_NAME: string = 'name'
 export const FIELD_LOAD_ADDRESS: string = 'address'
-