hot fix for dapp browsers

.env.local.example

 REACT_APP_NETWORK_ID="1"
 REACT_APP_NETWORK_URL=""
+REACT_APP_PORTIS_ID=""
+REACT_APP_FORTMATIC_KEY=""
\ No newline at end of file

package.json

@@ -10,7 +10,7 @@
     "@uniswap/sdk": "^1.0.0-beta.4",
     "@web3-react/core": "6.0.0-beta.19",
     "@web3-react/fortmatic-connector": "6.0.0-beta.19",
-    "@web3-react/injected-connector": "^6.0.0-beta.21",
+    "@web3-react/injected-connector": "6.0.0-beta.20",
     "@web3-react/network-connector": "6.0.0-beta.19",
     "@web3-react/portis-connector": "6.0.0-beta.19",
     "@web3-react/walletconnect-connector": "6.0.0-beta.19",

src/connectors/Injected.js

+import { InjectedConnector as InjectedConnectorCore } from '@web3-react/injected-connector'
+
+export class InjectedConnector extends InjectedConnectorCore {}

src/connectors/index.js

-import { InjectedConnector } from '@web3-react/injected-connector'
 import { WalletConnectConnector } from '@web3-react/walletconnect-connector'
 import { WalletLinkConnector } from '@web3-react/walletlink-connector'
 import { PortisConnector } from '@web3-react/portis-connector'
 
+import { InjectedConnector } from './Injected'
 import { NetworkConnector } from './Network'
 import { FortmaticConnector } from './Fortmatic'
 

yarn.lock

@@ -1922,10 +1922,10 @@
     fortmatic "^1.0.0"
     tiny-invariant "^1.0.6"
 
-"@web3-react/injected-connector@^6.0.0-beta.21":
-  version "6.0.0-beta.21"
-  resolved "https://registry.yarnpkg.com/@web3-react/injected-connector/-/injected-connector-6.0.0-beta.21.tgz#6f200dbfe2fb212b79027b48c510246c6eba8bfd"
-  integrity sha512-B83mz+8uCSyjqndA+E72FffXj29VlBMNey4aNjMsXkcgjgOOhcYQ8e0LZjZo48fdetYuXD4ZimqnGicb3jtbXg==
+"@web3-react/injected-connector@6.0.0-beta.20":
+  version "6.0.0-beta.20"
+  resolved "https://registry.yarnpkg.com/@web3-react/injected-connector/-/injected-connector-6.0.0-beta.20.tgz#b04787a4f036eaa6eb4c5ea327bc941a9383303e"
+  integrity sha512-uXVgSn8qUUEFd0figiaxHY9yF5RenpHx4sUDxTjAZrSUwkg2jPBoV7BjPcXPP2LGwqVzFDL4059usNXSV1FVqg==
   dependencies:
     "@web3-react/abstract-connector" "^6.0.0-beta.19"
     "@web3-react/types" "^6.0.0-beta.19"