jamf-upload: JamfPolicyUploader processor failing with errors when updating policies

I’m seeing a problem with the JamfPolicyUploader processor when running various policies which use it. An example is posted below:

JamfPolicyUploader: No value supplied for icon, setting default value of: 
JamfPolicyUploader: No value supplied for replace_icon, setting default value of: False
JamfPolicyUploader: File found at: /Users/ec2-user/Library/AutoPkg/RecipeRepos/com.github.rtrouton.autopkg_recipes/Jamf_Upload/PolicyTemplate-autoupdate.xml
JamfPolicyUploader: ("Replacing any instances of 'POLICY_NAME' with", "'Auto Update CiscoUmbrella'")
JamfPolicyUploader: ("Replacing any instances of 'POLICY_CATEGORY' with", "'Apps-AutoUpdate'")
JamfPolicyUploader: ("Replacing any instances of 'POLICY_TRIGGER' with", "'autoupdate-CiscoUmbrella'")
JamfPolicyUploader: ("Replacing any instances of 'pkg_name' with", "'Cisco_Umbrella_3.0.9.pkg'")
JamfPolicyUploader: Policy data:
JamfPolicyUploader: <?xml version="1.0" encoding="UTF-8"?>
<policy>
   <general>
      <name>Auto Update CiscoUmbrella</name>
      <enabled>true</enabled>
      <frequency>Ongoing</frequency>
      <category>
         <name>Apps-AutoUpdate</name>
      </category>
      <trigger_other>autoupdate-CiscoUmbrella</trigger_other>
   </general>
   <scope>
      <all_computers>true</all_computers>
   </scope>
   <package_configuration>
      <packages>
         <size>1</size>
         <package>
            <name>Cisco_Umbrella_3.0.9.pkg</name>
            <action>Install</action>
         </package>
      </packages>
   </package_configuration>
   <scripts>
      <size>0</size>
   </scripts>
   <maintenance>
      <recon>true</recon>
   </maintenance>
</policy>
JamfPolicyUploader: Checking for existing 'Auto Update CiscoUmbrella' on https://jamf.pro.server.here
JamfPolicyUploader: Checking for existing authentication token
JamfPolicyUploader: Checking https://jamf.pro.server.here against https://jamf.pro.server.here
JamfPolicyUploader: URL for token matches current request
JamfPolicyUploader: Existing token is valid
JamfPolicyUploader: No existing cookie found - starting new session
JamfPolicyUploader: curl command: /usr/bin/curl --silent --show-error -D /tmp/jamf_upload/curl_headers_from_jamf_upload.txt --output /tmp/jamf_upload/curl_output_from_jamf_upload.txt https://jamf.pro.server.here/api/v1/jamf-pro-version --request GET --header authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJhdXRoZW50aWNhdGVkLWFwcCI6IkdFTkVSSUMiLCJhdXRoZW50aWNhdGlvbi10eXBlIjoiSlNTIiwiZ3JvdXBzIjpbXSwic3ViamVjdC10eXBlIjoiSlNTX1VTRVJfSUQiLCJ0b2tlbi11dWlkIjoiMzE3ZTcyMWQtMzBjYi00ZjM3LWE3MDEtMDhhN2QyMWJhYzM1IiwibGRhcC1zZXJ2ZXItaWQiOi0xLCJzdWIiOiIyMCIsImV4cCI6MTY0Njk0MDc2M30.g4Cv9b7TOPyZP1zWPNK1SMO5c-9LxnUGTMBGnuuyY0k --header Accept: application/json
JamfPolicyUploader: Jamf Pro Version: 10.37.0-b.2.t1645716981
JamfPolicyUploader: Token auth will be used, 
JamfPolicyUploader: No existing cookie found - starting new session
JamfPolicyUploader: curl command: /usr/bin/curl --silent --show-error -D /tmp/jamf_upload/curl_headers_from_jamf_upload.txt --output /tmp/jamf_upload/curl_output_from_jamf_upload.txt https://jamf.pro.server.here/JSSResource/policies --request GET --header authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJhdXRoZW50aWNhdGVkLWFwcCI6IkdFTkVSSUMiLCJhdXRoZW50aWNhdGlvbi10eXBlIjoiSlNTIiwiZ3JvdXBzIjpbXSwic3ViamVjdC10eXBlIjoiSlNTX1VTRVJfSUQiLCJ0b2tlbi11dWlkIjoiMzE3ZTcyMWQtMzBjYi00ZjM3LWE3MDEtMDhhN2QyMWJhYzM1IiwibGRhcC1zZXJ2ZXItaWQiOi0xLCJzdWIiOiIyMCIsImV4cCI6MTY0Njk0MDc2M30.g4Cv9b7TOPyZP1zWPNK1SMO5c-9LxnUGTMBGnuuyY0k --header Accept: application/json
JamfPolicyUploader: Policy 'Auto Update CiscoUmbrella' already exists: ID 2459
JamfPolicyUploader: Replacing existing policy as 'replace_policy' is set to True
JamfPolicyUploader: Uploading Policy...
JamfPolicyUploader: Policy upload attempt 1
JamfPolicyUploader: No existing cookie found - starting new session
JamfPolicyUploader: curl command: /usr/bin/curl --silent --show-error -D /tmp/jamf_upload/curl_headers_from_jamf_upload.txt --output /tmp/jamf_upload/curl_output_from_jamf_upload.txt https://jamf.pro.server.here/JSSResource/policies/id/2459 --request PUT --header authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJhdXRoZW50aWNhdGVkLWFwcCI6IkdFTkVSSUMiLCJhdXRoZW50aWNhdGlvbi10eXBlIjoiSlNTIiwiZ3JvdXBzIjpbXSwic3ViamVjdC10eXBlIjoiSlNTX1VTRVJfSUQiLCJ0b2tlbi11dWlkIjoiMzE3ZTcyMWQtMzBjYi00ZjM3LWE3MDEtMDhhN2QyMWJhYzM1IiwibGRhcC1zZXJ2ZXItaWQiOi0xLCJzdWIiOiIyMCIsImV4cCI6MTY0Njk0MDc2M30.g4Cv9b7TOPyZP1zWPNK1SMO5c-9LxnUGTMBGnuuyY0k --upload-file /tmp/jamf_upload/jamf_upload_d7e5facc-6b51-4a4a-8b17-25a51698654a.txt --header Content-type: application/xml
JamfPolicyUploader: b'<html>\n<head>\n   <title>Status page</title>\n</head>\n<body style="font-family: sans-serif;">\n<p style="font-size: 1.2em;font-weight: bold;margin: 1em 0px;">Conflict</p>\n<p>Error: Problem with package</p>\n<p>You can get technical details <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.10">here</a>.<br>\nPlease continue your visit at our <a href="/">home page</a>.\n</p>\n</body>\n</html>\n'
Traceback (most recent call last):
  File "/Library/AutoPkg/autopkglib/__init__.py", line 840, in process
    self.env = processor.process()
  File "/Library/AutoPkg/autopkglib/__init__.py", line 626, in process
    self.main()
  File "/Users/ec2-user/Library/AutoPkg/RecipeRepos/com.github.autopkg.grahampugh-recipes/JamfUploaderProcessors/JamfPolicyUploader.py", line 304, in main
    token=token,
  File "/Users/ec2-user/Library/AutoPkg/RecipeRepos/com.github.autopkg.grahampugh-recipes/JamfUploaderProcessors/JamfPolicyUploader.py", line 134, in upload_policy
    if self.status_check(r, "Policy", policy_name, request) == "break":
  File "/Users/ec2-user/Library/AutoPkg/RecipeRepos/com.github.autopkg.grahampugh-recipes/JamfUploaderProcessors/JamfUploaderLib/JamfUploaderBase.py", line 396, in status_check
    f"WARNING: {endpoint_type} '{obj_name}' {action} failed due to a conflict"
autopkglib.ProcessorError: WARNING: Policy 'Auto Update CiscoUmbrella' update failed due to a conflict
  File "/Library/AutoPkg/autopkglib/__init__.py", line 840, in process
    self.env = processor.process()
Receipt written to /Users/ec2-user/Library/AutoPkg/Cache/local.jamf.CiscoUmbrella-App-AutoUpdate/receipts/local.jamf-receipt-20220310-190539.plist

As far as I can tell, the XML for the policy template is formatted correctly (please see below):

<?xml version="1.0" encoding="UTF-8"?>
<policy>
   <general>
      <name>%POLICY_NAME%</name>
      <enabled>true</enabled>
      <frequency>Ongoing</frequency>
      <category>
         <name>%POLICY_CATEGORY%</name>
      </category>
      <trigger_other>%POLICY_TRIGGER%</trigger_other>
   </general>
   <scope>
      <all_computers>true</all_computers>
   </scope>
   <package_configuration>
      <packages>
         <size>1</size>
         <package>
            <name>%pkg_name%</name>
            <action>Install</action>
         </package>
      </packages>
   </package_configuration>
   <scripts>
      <size>0</size>
   </scripts>
   <maintenance>
      <recon>true</recon>
   </maintenance>
</policy>

Full sanitized verbose output of the AutoPkg run is attached as “JamfPolicyUploader_error_processor.txt.” JamfPolicyUploader_error_processor.txt