Error: Request failed with status 400 (URL: https://relay.flashbots.net): {"error":"unable to decode txs"}

[design-smith]

I keep getting that error when I try to simulate my transaction. This is the code:

[Fahadulhassan1]

 flashbotsprovider = await FlashbotsBundleProvider.create(
      provider,
      authSigner,
     "https://wallet relay url"
     "sepolia"
    );
  pass your relay url and network as well. even it's optional but optional is only for mainnet

[design-smith]

I implemented your suggestion and it kinda worked. Now I am getting a new error "Simulation Error: the method eth_callBundle does not exist/is not available" Any idea what might be the problem?

On Wed, Sep 4, 2024 at 8:26 PM Zeke @.***> wrote:

Thank you so much for your help. Does this 'https://relay.flashbots.net' work as a wallet relay URL?

On Wed, Sep 4, 2024 at 8:33 AM Fahad ul Hassan @.***> wrote:

flashbotsprovider = await FlashbotsBundleProvider.create( provider, authSigner, "https://wallet relay url" "sepolia" ); pass your relay url and network as well. even it's optional but optional is only for mainnet

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[Fahadulhassan1]

yes I faced this issue as well. may be you're passing wrong replay.