This error is user-facing in GUI wallets, so try to confuse them less

src/wallet/rpcwallet.cpp

@@ -83,7 +83,7 @@ UniValue z_getoperationstatus_IMPL(const UniValue&, bool);
 
 #define PLAN_NAME_MAX   8
 #define VALID_PLAN_NAME(x)  (strlen(x) <= PLAN_NAME_MAX)
-#define THROW_IF_SYNCING(INSYNC)  if (INSYNC == 0) { throw runtime_error(strprintf("%s: Extreme Privacy! Chain still syncing at height %d, aborting to prevent linkability analysis",__FUNCTION__,chainActive.Tip()->GetHeight())); }
+#define THROW_IF_SYNCING(INSYNC)  if (INSYNC == 0) { throw runtime_error(strprintf("%s: Extreme Privacy! Chain still syncing at height %d, aborting to prevent linkability analysis. Please wait until FULLY SYNCED and try again.",__FUNCTION__,chainActive.Tip()->GetHeight())); }
 
 int tx_height( const uint256 &hash );