@Jude Antony Thanks for posting in our Q&A.
For this issue, did you mean that you refer to the following article to use Intune App Wrapping Tool for Webview? However, it couldn't show PDF file.
https://learn.microsoft.com/en-us/mem/intune/developer/app-wrapper-prepare-android
Please understand that this issue is more related to intune develop scope. For this error message, it is not enough to find the root cause. It is needed to check more logs based on your specific environment. With Q&A limitation resource, it is suggested to create an online support ticket to get more accurate help. Here is the support link:
https://learn.microsoft.com/en-us/mem/get-support
Thanks for your understanding and hope everything goes well with you.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.