Missing Back button in buy tickets page and wrong heading

[nahularenas]

There is no "Volver" button to go back to the "Conciertos" page. The button says "Comprar tickets" but when clicking it, you are redirected to a page with heading "Vender tickets"

PreConditions: -

Numbered Steps to reproduce: Press "Comprar Tickets" button

Issue/ Actual Result: No "Volver" button

Expected Result: There is a "Volver" button