Error in using the function parseZkLoginSignature

The error is coming as this Invalid typed array length: 114 at new Uint8Array (<anonymous>)

I am generating the signature following the guide and it is getting generated properly and matching the format also BQNMNDQzOTUxMzIxMzQzNDk1MTcyOTExNzIxN.......
also while using the executeTransactionblock on this verify groth 16 error is coming , could someone please help with this .
I can share more the code also , but rest of the steps are working fine