Error while uploading theme to wordpress on Azure

it was the web.config file.here was the fix that worked for me:

<?xml version="1.0" encoding="UTF-8"?><configuration><system.webServer><rewrite><rules><rule name="WordPress Rule 1" stopProcessing="true"><match url="^index\.php$" ignoreCase="false" /><action type="None" /></rule><rule name="WordPress Rule 2" stopProcessing="true"><match url="^([_0-9a-zA-Z-]+/)?files/(.+)" ignoreCase="false" /><action type="Rewrite" url="wp-includes/ms-files.php?file={R:2}" appendQueryString="false" /></rule><rule name="WordPress Rule 3" stopProcessing="true"><match url="^([_0-9a-zA-Z-]+/)?wp-admin$" ignoreCase="false" /><action type="Redirect" url="{R:1}wp-admin/" redirectType="Permanent" /></rule><rule name="WordPress Rule 4" stopProcessing="true"><match url="^" ignoreCase="false" /><conditions logicalGrouping="MatchAny"><add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" /><add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" /></conditions><action type="None" /></rule><rule name="WordPress Rule 5" stopProcessing="true"><match url="(^[_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*)" ignoreCase="false" /><action type="Rewrite" url="{R:2}" /></rule><rule name="WordPress Rule 6" stopProcessing="true"><match url="^([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" /><action type="Rewrite" url="{R:2}" /></rule><rule name="WordPress Rule 7" stopProcessing="true"><match url="." ignoreCase="false" /><action type="Rewrite" url="index.php" /></rule></rules></rewrite></system.webServer></configuration>