EVM / Solidity Error 0xfb8f41b2: ERC20InsufficientAllowance

Error✕ Not retryable · fix the payloadSmart Contract

TL;DR · 10-second read

transferFrom was called by a spender whose allowance is lower than the amount. The data decodes to (spender, allowance, needed); call approve(spender, amount) from the token owner first.

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What you see · exact log / response

Error: execution reverted (unknown custom error) (action="estimateGas", data="0xfb8f41b2000000000000000000000000e7f1725e7734ce288f8367e1bb143e90bb3f05120000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000ee6b280", reason=null, code=CALL_EXCEPTION, version=6.13.4)

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Last verified 2026-10-15 · Source: 4byte/OpenChain signatures + OpenZeppelin v5 custom errors + Panic codes · Official docs ↗ · ~2,900 searches/mo