#RC#
Most “failed to fetch” errors are simply a result of an overloaded public access point. Most gas-related errors are easily fixed by observing the current market conditions. It is highly recommended to monitor the mempool for any conflicting pending operations.
When gateway returns a failure 400, check the input parameters once more. Increasing the gas buffer for gateway can help overcome internal 400 reverts. Testing the proposed fix for 400 on a devnet is the safest way to proceed.
Ensure that your local environment is not leaking state data to avoid 400. Stay informed, as most technical bugs are part of the broader ecosystem’s growth. Make sure your gateway integration uses the latest stable version of the SDK.
The experience gained from troubleshooting will serve you well in the future.