Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> ff27ab905c5188cc62a929ba20ca569afccb137804096adca72369cbc546c6fc:47:4
   |
47 |     self.FLOATEvent.claim(recipient: self.Collection, params: params)
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

   --> 2d4c3caffbeab845.FLOAT:792:12
    |
792 |             self.verifyAndMint(recipient: recipient, params: params)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

   --> 2d4c3caffbeab845.FLOAT:751:20
    |
751 |                     verifier.verify(params)
    |                     ^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
   --> 2d4c3caffbeab845.FLOATVerifiers:235:38
    |
235 |             let sig: [UInt8] = (params["emailSig"]! as! String).decodeHex()
    |                                       ^^^^^^^^^^^^^