E0424: An undefined name near a context processor variable

A template names something that isn't a field, a local, a declaration of the package or a context processor variable, and it is a letter or two from one: a typo. The diagnostic suggests the variable and the processor giving it. Reported by the compiler and the editor.

Wrong

<span>{usr.Name}</span>

Right

<span>{user.Name}</span>

See context processors.