'The remote server returned an error:(500) Internal Server Error.' while uploading priclelists

Summary:

While uploading the pricelists using the maintain price lists spreadsheet, 'The remote server returned an error: (500) Internal Server Error.' is popping up with create or upload failed.

Content (please ensure you mask any confidential information):

After the recent upgrade 26A, whenever users are trying to upload the pricelist, they are getting below

The remote server returned an error: (500) Internal Server Error.' error:

The remote server returned an error: (500) Internal Server Error.

~~~~~~~~~~

WebException: The remote server returned an error: (500) Internal Server Error.

Source: System

Stack:

   at System.Net.HttpWebRequest.GetResponse()

   at oracle.adf.client.windows.common.internet.http.ManagedHttpResponse.get_HttpWebResponse()