Weird error with invalid guardrail script

[reeshavacharya]

After submitting a proposal with invalid guardrail-script:

{"selections": ["addr_test1qrd3hs7rlxwwdzthe6hj026dmyt3y0heuulctscyydh2kguh4xfmpjqkd25vfq69hcvj27jqyk4hvnyxu7vma2c4kvps8eh2m3", {"type": "PaymentSigningKeyShelley_ed25519", "description": "Payment Signing Key", "cborHex": "5820ab863c2e6c2e0837d1929b872c43dbe485c326a29527bf267da4cde498731f02"}], "proposals": [{"refundAccount": {"network": "Testnet", "credential": {"key hash": "db1bc3c3f99ce68977ceaf27ab4dd917123ef9e73f85c304236eab23"}}, "deposit": null, "anchor": {"url": "https://bit.ly/3zCH2HL", "dataHash": "1111111111111111111111111111111111111111111111111111111111111111"}, "withdraw": {"stake_test1ur22gq6nr20jw7jnn57gkvfw8u4dzpejfe8flxm3mt72fuc8zz8em": 500000000}, "script": {"type": "PlutusScriptV3", "description": "", "cborHex": "asdgasdgdsfgasdfgasdg"}}]}

The error is:

Error in $.proposals[0]: "atLeast" script value not found

A clear error indicating invalid guardrail script must be thrown.