TX decode failed 輸出映射末尾缺少分隔符：iostream 錯誤

import requests

url = "http://127.0.0.1:18332/wallet/w3"

headers = {
   'Authorization': 'Basic dXNlcjpwYXNz',
   'Content-Type': 'text/plain'
}

def combinetx():

   payload = "{\"jsonrpc\": \"1.0\",\r\n \"id\": \"test\",\r\n  \"method\": \"combinepsbt\",\r\n  \"params\": [[\"" + str(round_spsbt_list[0]) + "\",\"" + str(round_spsbt_list[1]) + "\",\"" + str(round_spsbt_list[2]) + "\",\"" + str(round_spsbt_list[3]) + "\",\"" + str(round_spsbt_list) + "\"]]\r\n}"
   response = requests.request("POST", url, headers=headers, data=payload)

   combined_psbt = response.json()

   return combined_psbt
   
if __name__=="__main__":

   round_spsbt_list = []

   round_spsbt_list.append("cHNidP8BAP1yAQIAAAAFtMaoJYcXvOG5L3Yaz3YyS7gIt4h5/zzOrRRS3hrVvwoAAAAAAP////+o83geaSm4L76KToIUl5MiZqLAUbIDJLq6DWrjP/3b8AEAAAAA/////zEF3CXIvVHpIa7No1s1yg+KtyOfXTRSyWnOdXMfzcDwAQAAAAD/////wMa4XAgnU+39Ien+KG9rYtv8bLMNYakmZyY/QFfwLRcAAAAAAP/////5M42ID6uLmQTb2tnFHnN7UMpnDD25uN8ZX7A+GNSM3QEAAAAA/////wV4xwEAAAAAABYAFCdv635VGsRUX2ATAf2wkSkYER9qeMcBAAAAAAAWABSkEuQKyglw2lwyDpHhw6VwjMuncXjHAQAAAAAAFgAUy/I/6r4EbPYgMJBacHw1783WY3F4xwEAAAAAABYAFBwQ03JK7zC5CHSRLjwzPk8pdeYyeMcBAAAAAAAWABR0ykR92RB3+dhLNsor+r7Uc01FzwAAAAAAAQBxAgAAAAG+qpMXZCy6tBuUlgo8JD0GVXKp60FkhwDeg2sF1fkFkwMAAAAA/f///wLo9wEAAAAAABYAFFfLA5xarC/w/SxeMDQ5tuXrYJLUWwMAAAAAAAAWABRfPf//hwMjHB4OKj87cU19XOSh7yOWAQABAR/o9wEAAAAAABYAFFfLA5xarC/w/SxeMDQ5tuXrYJLUAQhrAkcwRAIgGEWUhIVEpf928ESNN+0PdKxSGVYoLef8UcxQhdGeA4UCIEq9a/yrLCAhmIilHl50jlXY7cEDTEJdrbQirIv6W/TVASECRJvl+3RyUlXu61DrqTD6h3BfIemdE81xDPLB8hFTyAgAAAAAACICAy3gN+aSj6gtvghrYh/bYvHOxH44xjwcAU0hWRj/+rTAGFODDcpUAACAAQAAgAAAAIAAAAAAEQAAAAAAAAAA")

   round_spsbt_list.append("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")

   round_spsbt_list.append("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")

   round_spsbt_list.append("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")

   round_spsbt_list.append("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")

   ctx = combinetx()
   print(ctx)

此錯誤的原因是什麼以及如何解決？我理解錯誤說“輸出映射末尾缺少分隔符”，但是我檢查了所有內容，但找不到包括其他功能在內的程式碼有任何問題。

錯誤：

{'result': None, 'error': {'code': -22, 'message': 'TX decode failed Separator is missing at the end of an output map: iostream error'}, 'id': 'test'}

這意味著 PSBT 格式不正確，並且缺少 PSBT 中每個部分末尾所需的分隔符。當最後一個輸出映射缺少分隔符時，通常會出現此錯誤。造成這種情況的一個常見原因是在選擇 PSBT 以複製並粘貼到另一個程序時意外錯過了 PSBT 的最後一個或兩個字元。

引用自：https://bitcoin.stackexchange.com/questions/114952