I need some help, when I do a migration with migration tool from magento 1.9.1 to magento 2, I got an error message: "Migration.ERROR: Migration tool exception: XML file is invalid.  ", I was edit the config.xml already with source version = 1.9.1 and destination version = 126.96.36.199 and also delete .dist extension from all xml files inside data-migration-tool folder. Then I perform php migration --config=<path-to-config.xml>, and got this error message, can anyone help me?
I ran into this error and I got it resolved. Within the xml file, there is a reference to a .xsd that defines what the schema of the xml should be. In my case, i ran into the error when carrying out settings migration. So the settings.xsd schema has the definition.
Copy the entire xml and paste in an xml validation website. In my case, i used: http://www.xmlvalidation.com.
It will prompt you to copy the referenced .xsd file and paste in as well.
Doing this pointed to entries that had "-" in it. The .xsd file did not expect entries with a "-" as it broke the wildcard regex.
I solved it by removing those entries and replacing them with a wildcard instead.
I replaced the entry with ewcartreminder*
Hope this helps someone.