when I add liquidity from Klay to Dai there is a problem "error preparation failed" I don't know if it's a bug or what

[angga1222]

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Environment (please complete the following information)

• klaytn-dex-frontend release version that exhibits the issue
• OS and its version [e.g. macOS/10.14]
• Wallet and its version used [e.g. Kaikas, metamask]

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[Homer-Klaytn]

@angga1222 Added liquidity Klay to Dai with no issues Thanks!