docs(examples): note RPC fix for intermittent allowance error on bid#88
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The post-approval simulateContract for the bid can revert with "ERC20: transfer amount exceeds allowance" when the configured RPC is load-balanced (e.g. the default sepolia.base.org), because the eth_call may be served by a node that hasn't yet synced the approval block. Add a comment pointing developers to the existing NEXT_PUBLIC_BASE_RPC_URL / VITE_BASE_RPC_URL env var as the fix. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
danielrx-echo
approved these changes
May 6, 2026
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Summary
simulateContractfor the bid in the EVM example apps can intermittently revert withERC20: transfer amount exceeds allowance. Root cause: load-balanced public RPCs (e.g. the defaultsepolia.base.org) may route theeth_callto a node that hasn't yet synced the approval block. The on-chain execution is unaffected — clicking Commit a second time succeeds.NEXT_PUBLIC_BASE_RPC_URL/VITE_BASE_RPC_URL(see.env.example).Supersedes #87.
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