update troubleshooting

Author: youssefea

docs/base-chain/quickstart/base-solana-bridge.mdx

@@ -196,8 +196,7 @@ Set `CDP_API_KEY` in your `.env` file to get access to the faucet.
 
 <AccordionGroup>
   <Accordion title="Incorrect gas fee receiver">
-    Make sure your client passes the gas-fee receiver that matches the relayer config for the
-    selected network (see the address tables above). A mismatch triggers `Error Code: 12300`.
+    A mismatch triggers `Error Code: 12300`. Instead of hardcoding the receiver address, query it directly from the [bridge config](https://github.com/base/bridge/blob/main/solana/programs/bridge/src/common/state/bridge.rs#L170). See the [bridge script](https://github.com/base/bridge/blob/main/scripts/src/commands/sol/bridge/solana-to-base/bridge-sol.handler.ts#L92) for an example.
   </Accordion>
   <Accordion title="RPC 403 on mainnet">
     Public Solana RPC endpoints throttle cross-origin requests. Set