When attempting to import a solution in Dynamics 365, you encounter the following error:
"This solution package cannot be imported because it contains invalid XML. You can attempt to repair the file by manually editing the XML contents using the information found in the schema validation errors, or you can contact your solution provider.
Error code 8004801a."
If you click Technical Details, you see the following message along with additional error details:
"Schema validation of the customizations.xml file within the compressed solution package file failed. To manually validate and edit the file, you can download the schema file here and use an XML editor that supports schema validation to get more details."