Add types required by new node

types/src/index.ts

@@ -53,4 +53,8 @@ export const types: RegistryTypes = {
   ...discovery,
   ...media,
   ...proposals,
+  // Required since migration to Substrate 2.0,
+  // see: https://polkadot.js.org/api/start/FAQ.html#the-node-returns-a-could-not-convert-error-on-send
+  Address: 'AccountId',
+  LookupSource: 'AccountId',
 }