Decentralized exchange DeversiFi is looking to calm user jitters after a simple ERC-20 token transaction somehow cost the platform $23.7 million in fees.

The transaction occurred early Monday morning and was flagged two hours later on Twitter. The transaction was for $100,000 in stablecoin Tether – a ERC-20 token transfer that, at the time of writing, should have cost under $5.

While early reports indicated that the transaction originated from centralized exchange Bitfinex, DeversiFi’s tweet seems to indicate that it was an internal transaction. Both Etherscan and on-chain analytics service Nansen have the originating address labeled as belonging to Bitfinex, and the address holds nearly $1.5 billion in ETH – orders of magnitude more than DeversiFi’s $45 million in total value locked, per DeFi Pulse.

The decentralized finance (DeFi) platform, which was incubated by Bitfinex in 2017 and launched in 2018, wrote in a Tweet this morning that the high fee is the result of an internal error:

At 11:10 UTC on the 27th September a deposit transaction was made using a hardware wallet from the main DeversiFi user interface with an erroneously high gas fee.https://t.co/OpSHkkFiBo

— DeversiFi 🥷 (@deversifi) September 27, 2021

The official handle added that the team is “investigating,” that no user funds are at risk, and that the platform is operating normally.

The miner that received the fee has mined 3.1848% of all Ethereum blocks in the past seven days, but has not been identified by either Nansen or Etherscan.