How-to articles, tricks, and solutions about GOOGLE-APP-ENGINE
"Content is not allowed in prolog" when parsing perfectly valid XML on GAE
The "Content is not allowed in prolog" error typically occurs when you try to parse an XML document that contains characters before the XML prolog (the <?xml ...?> declaration).
Spring Boot - Cannot determine embedded database driver class for database type NONE
If you are seeing the error "Cannot determine embedded database driver class for database type NONE" in a Spring Boot application, it means that the application is trying to auto-configure an embedded database, but it is unable to determine which database