How to get my phone working again?

[AC Question]

Hello forum, my phone is unfortunately stuck in a bootloop. The dreaded red letters, "RECOVERY IS NOT SEANDROID ENFORCING" appear above the Samsung Galaxy S6 boot-up text and the phone just sits there. This happened when I installed team win's custom recovery after I rooted and upgraded to 5.1.1 on my SM-G920P phone. I am very frustrated and I want to know a way I can fix my phone either using Samsung's smartswitch or Odin. Help me!!