AUSST Update Error

When I run the Creative Cloud Desktop app on my computer, the following screen appears and I can't update the app.

No security or firewall has been set up on the server.
What should I do?

I checked the site below, but I couldn't find a solution.

https://helpx.adobe.com/enterprise/using/troubleshoot-ausst.html

[DLM.log]

10/14/21 17:11:22:370 | [INFO] | | | | | | | 25424 | *******************start of Download****************
10/14/21 17:11:22:370 | [INFO] | | | | | | | 25424 | GDE Version is 5.6.0.13
10/14/21 17:11:23:910 | [INFO] | | | | | | | 21072 | *******************start of Download****************
10/14/21 17:11:23:910 | [INFO] | | | | | | | 21072 | GDE Version is 5.6.0.13
10/14/21 17:11:23:997 | [INFO] | | | | | | | 17380 | *******************start of Download****************
10/14/21 17:11:23:997 | [INFO] | | | | | | | 17380 | GDE Version is 4.0.0.159
10/14/21 17:11:24:091 | [INFO] | | | | | | | 14380 | INFO: serverfullpathForHeadCall is empty in input structure of DLE
10/14/21 17:11:24:093 | [ERROR] | | | | | | | 14380 | The windows error code is - 12180
10/14/21 17:11:24:093 | [ERROR] | | | | | | | 14380 | Failed to get the user proxy settings (WPAD). Error is 12180. Ignoring the proxy setting in this case.
10/14/21 17:11:24:093 | [ERROR] | | | | | | | 14380 | failed to resolve the proxy setting on the machine
10/14/21 17:11:24:093 | [INFO] | | | | | | | 14380 | The file to be downloaded is https://prod-rel-ffc-ccm.oobesaas.adobe.com/adobe-ffc-external/core/v2/features?appVersion=5.6.0.788&ccdPlatform=win32&osVersion=10.0.0&platform=win32&thorLocale=ko_KR
10/14/21 17:11:24:093 | [INFO] | | | | | | | 14380 | Going to download the file at C:\Users\user\AppData\Local\Temp\/{5CF4882D-A26F-4578-86BE-56B88BB4F92D}
10/14/21 17:11:24:093 | [INFO] | | | | | | | 14380 | Preference: Preference is set for adding compression header
10/14/21 17:11:24:093 | [INFO] | | | | | | | 14380 | Preference: Client has set the preference for single stream download
10/14/21 17:11:24:106 | [INFO] | | | | | | | 16736 | thread count is 0 and active thread count is 1
10/14/21 17:11:24:616 | [INFO] | | | | | | | 21092 | Using New Adaptive Algorithm
10/14/21 17:11:24:616 | [INFO] | | | | | | | 21092 | INFO: serverfullpathForHeadCall is empty in input structure of DLE
10/14/21 17:11:24:618 | [ERROR] | | | | | | | 21092 | The windows error code is - 12180
10/14/21 17:11:24:618 | [ERROR] | | | | | | | 21092 | Failed to get the user proxy settings (WPAD). Error is 12180. Ignoring the proxy setting in this case.
10/14/21 17:11:24:618 | [ERROR] | | | | | | | 21092 | failed to resolve the proxy setting on the machine
10/14/21 17:11:24:618 | [INFO] | | | | | | | 21092 | The file to be downloaded is http://192.168.0.52/ACC/services/ffc/icons/productIcon?size=48x48
10/14/21 17:11:24:618 | [INFO] | | | | | | | 21092 | Going to download the file at C:\Users\user\AppData\Local\Temp\{5BB27230-A1F5-47EA-AD13-0138BA185E2B}/{FA09DD8A-3616-467B-BA05-F8D01443F81A}
10/14/21 17:11:24:618 | [INFO] | | | | | | | 21092 | Using New Adaptive Algorithm
10/14/21 17:11:24:618 | [INFO] | | | | | | | 21092 | Preference: Preference is set for adding compression header
10/14/21 17:11:24:618 | [INFO] | | | | | | | 21092 | Preference: Client has set the preference for single stream download
10/14/21 17:11:24:745 | [ERROR] | | | | | | | 24104 | The error has come and the http error code is - 404
10/14/21 17:11:24:746 | [ERROR] | | | | | | | 24104 | Failed to send the request to server to get the response - 404
10/14/21 17:11:24:746 | [ERROR] | | | | | | | 24104 | the download job (0) failed to execute. The job state is STOPPED_STATE
10/14/21 17:11:24:746 | [ERROR] | | | | | | | 24104 | the download job (0) failed to execute. The job state is ERROR_STATE
10/14/21 17:11:24:746 | [INFO] | | | | | | | 24104 | WorkerThread::ThreadProc Current job is in Error State which is not recoverable
10/14/21 17:11:25:609 | [INFO] | | | | | | | 16736 | gzip encoding received in respose header. Going to unzip...
10/14/21 17:11:25:610 | [INFO] | | | | | | | 16736 | successfully unzipped the gzip response
10/14/21 17:11:25:611 | [INFO] | | | | | | | 16736 | File download complete: https://prod-rel-ffc-ccm.oobesaas.adobe.com/adobe-ffc-external/core/v2/features?appVersion=5.6.0.788&ccdPlatform=win32&osVersion=10.0.0&platform=win32&thorLocale=ko_KR size: 6190 Bytes, Time Taken:1517.000000 milliseconds
10/14/21 17:11:25:684 | [INFO] | | | | | | | 14380 | INFO: serverfullpathForHeadCall is empty in input structure of DLE
10/14/21 17:11:25:685 | [ERROR] | | | | | | | 14380 | The windows error code is - 12180
10/14/21 17:11:25:685 | [ERROR] | | | | | | | 14380 | Failed to get the user proxy settings (WPAD). Error is 12180. Ignoring the proxy setting in this case.
10/14/21 17:11:25:685 | [ERROR] | | | | | | | 14380 | failed to resolve the proxy setting on the machine
10/14/21 17:11:25:685 | [INFO] | | | | | | | 14380 | The file to be downloaded is https://cdn-ffc.oobesaas.adobe.com/core/v1/applications?name=CreativeCloud&name=CCLBS&osVersion=10.0.0.19043&platform=win64&version=5.6.0.788
10/14/21 17:11:25:685 | [INFO] | | | | | | | 14380 | Going to download the file at C:\Users\user\AppData\Local\Temp\/{D02C5659-17C1-4CD3-BE27-F1367CAEAB1C}
10/14/21 17:11:25:685 | [INFO] | | | | | | | 14380 | Preference: Preference is set for adding compression header
10/14/21 17:11:25:685 | [INFO] | | | | | | | 14380 | Preference: Client has set the preference for single stream download
10/14/21 17:11:25:703 | [INFO] | | | | | | | 11088 | thread count is 0 and active thread count is 1
10/14/21 17:11:26:014 | [INFO] | | | | | | | 11088 | gzip encoding received in respose header. Going to unzip...
10/14/21 17:11:26:015 | [INFO] | | | | | | | 11088 | successfully unzipped the gzip response
10/14/21 17:11:26:016 | [INFO] | | | | | | | 11088 | File download complete: https://cdn-ffc.oobesaas.adobe.com/core/v1/applications?name=CreativeCloud&name=CCLBS&osVersion=10.0.0.19043&platform=win64&version=5.6.0.788 size: 3073 Bytes, Time Taken:330.000000 milliseconds
10/14/21 17:11:26:618 | [INFO] | | | | | | | 23768 | Using New Adaptive Algorithm
10/14/21 17:11:26:618 | [INFO] | | | | | | | 23768 | INFO: serverfullpathForHeadCall is empty in input structure of DLE
10/14/21 17:11:26:619 | [ERROR] | | | | | | | 23768 | The windows error code is - 12180
10/14/21 17:11:26:619 | [ERROR] | | | | | | | 23768 | Failed to get the user proxy settings (WPAD). Error is 12180. Ignoring the proxy setting in this case.
10/14/21 17:11:26:619 | [ERROR] | | | | | | | 23768 | failed to resolve the proxy setting on the machine
10/14/21 17:11:26:619 | [INFO] | | | | | | | 23768 | The file to be downloaded is http://192.168.0.52/ACC/services/ffc/icons/productIcon?size=48x48
10/14/21 17:11:26:619 | [INFO] | | | | | | | 23768 | Going to download the file at C:\Users\user\AppData\Local\Temp\{5BB27230-A1F5-47EA-AD13-0138BA185E2B}/{ADD08E7A-6538-4240-A7D1-838A6BA69721}
10/14/21 17:11:26:619 | [INFO] | | | | | | | 23768 | Using New Adaptive Algorithm
10/14/21 17:11:26:619 | [INFO] | | | | | | | 23768 | Preference: Preference is set for adding compression header
10/14/21 17:11:26:619 | [INFO] | | | | | | | 23768 | Preference: Client has set the preference for single stream download
10/14/21 17:11:26:742 | [ERROR] | | | | | | | 10828 | The error has come and the http error code is - 404
10/14/21 17:11:26:742 | [ERROR] | | | | | | | 10828 | Failed to send the request to server to get the response - 404
10/14/21 17:11:26:742 | [ERROR] | | | | | | | 10828 | the download job (0) failed to execute. The job state is STOPPED_STATE
10/14/21 17:11:26:742 | [ERROR] | | | | | | | 10828 | the download job (0) failed to execute. The job state is ERROR_STATE
10/14/21 17:11:26:743 | [INFO] | | | | | | | 10828 | WorkerThread::ThreadProc Current job is in Error State which is not recoverable
10/14/21 17:11:28:038 | [INFO] | | | | | | | 7684 | Using New Adaptive Algorithm
10/14/21 17:11:28:038 | [INFO] | | | | | | | 7684 | INFO: serverfullpathForHeadCall is empty in input structure of DLE
10/14/21 17:11:28:039 | [ERROR] | | | | | | | 7684 | The windows error code is - 12180
10/14/21 17:11:28:039 | [ERROR] | | | | | | | 7684 | Failed to get the user proxy settings (WPAD). Error is 12180. Ignoring the proxy setting in this case.
10/14/21 17:11:28:039 | [ERROR] | | | | | | | 7684 | failed to resolve the proxy setting on the machine
10/14/21 17:11:28:039 | [INFO] | | | | | | | 7684 | The file to be downloaded is http://192.168.0.52/ACC/services/ffc/products/ffc.xml?&channel=mobileApps&platform=win64,win32&_type=xml&productType=Desktop&personGuid=6FFF43115B8CB5470A495E78@AdobeID&payload=true&deviceId=b0943a66be38218ea9bec4da11618a48a6792fe93ffdd064eb5e289ec4ead191
10/14/21 17:11:28:039 | [INFO] | | | | | | | 7684 | Going to download the file at C:\Users\user\AppData\Local\Temp\{562C7E12-6BA7-4179-8340-AE16A4ED061E}/{D4409E1B-E517-4587-87D4-988CCA600FAC}
10/14/21 17:11:28:039 | [INFO] | | | | | | | 7684 | Using New Adaptive Algorithm
10/14/21 17:11:28:039 | [INFO] | | | | | | | 7684 | Preference: Preference is set for adding compression header
10/14/21 17:11:28:039 | [INFO] | | | | | | | 7684 | Preference: Client has set the preference for single stream download
10/14/21 17:11:28:063 | [ERROR] | | | | | | | 1640 | The error has come and the http error code is - 404
10/14/21 17:11:28:063 | [ERROR] | | | | | | | 1640 | Failed to send the request to server to get the response - 404
10/14/21 17:11:28:063 | [ERROR] | | | | | | | 1640 | the download job (0) failed to execute. The job state is STOPPED_STATE
10/14/21 17:11:28:063 | [ERROR] | | | | | | | 1640 | the download job (0) failed to execute. The job state is ERROR_STATE
10/14/21 17:11:28:063 | [INFO] | | | | | | | 1640 | WorkerThread::ThreadProc Current job is in Error State which is not recoverable