2 of 2 -9 bytes thanks to Jo King

><>, 18 9 bytes

"|o<"r>o|

-9 bytes thanks to Jo King

Try it online! (quoted)

Explanation

"|o<"r>o|
"|o<"     Pushes the quoted characters onto the stack
     r    Reverses the stack
      >o| Outputs all characters on stack & errors
""|o<"r>o|"
""          No-op
  |         Reverses the IP direction
     "r>o|" Pushes the quoted characters onto the stack (backwards)
  |o<       Outputs all characters on stack & errors