No security definition has been found for the request error

Here is output for following code:

Code:

    def OnData(self, data):
		for chain in data.FutureChains:
			for contract in chain.Value:
				self.liquidContract = contract
				self.Log(f"liquidContract={str(self.liquidContract)}, liquidContract.Symbol={str(self.liquidContract.Symbol)}, liquidContract.Symbol.Value={str(self.liquidContract.Symbol.Value)}")

Output:

liquidContract=MNQ16Z22, liquidContract.Symbol=MNQ16Z22, liquidContract.Symbol.Value=MNQ16Z22
liquidContract=MNQ17H23, liquidContract.Symbol=MNQ Y6URRFPZ86BL, liquidContract.Symbol.Value=MNQ17H23

liquidContract.Symbol is printing correct contract string value for Dec Contract. Not sure why. It use to print value like that of March contract. Please help, this is blocking my live algo.

Correction:
liquidContract.Symbol is NOT printing correct contract string value for Dec Contract. Not sure why. It use to print value like that of March contract. Please help, this is blocking my live algo.

Hi Kalaivani 

We are unable to debug your algorithm with insufficient information. Please provide the whole error stacktrace message, as well as the full code snippets. Alternatively, you may contact support@quantconnect.com for live algorithm assistance.

Best
Louis