String index out of range when requesting Backsplash /

[rbreslow]

$ http https://backsplash.rasterfoundry.com/
HTTP/1.1 500 Internal Server Error
Connection: keep-alive
Content-Length: 0
Date: Thu, 26 Nov 2020 03:41:20 GMT
Server: nginx
Strict-Transport-Security: max-age=15552000; preload
X-Content-Type-Options: nosniff

Nov 25 22:41:20 34.199.142.172 production/backsplash [scala-execution-context-global-74771] ERROR o.h.s.service-errors - Error servicing request: GET / from 172.17.0.4 
Nov 25 22:41:20 34.199.142.172 production/backsplash java.lang.StringIndexOutOfBoundsException: String index out of range: -1
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at java.lang.String.charAt(String.java:658)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at com.rasterfoundry.backsplash.server.RequestRewriteMiddleware$.$anonfun$apply$1(RequestRewriteMiddleware.scala:30)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at cats.data.Kleisli.apply(Kleisli.scala:132)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at com.rasterfoundry.backsplash.server.RequestRewriteMiddleware$.$anonfun$apply$1(RequestRewriteMiddleware.scala:33)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at cats.data.Kleisli.apply(Kleisli.scala:132)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at com.rasterfoundry.backsplash.error.ServiceHttpErrorHandler$.$anonfun$apply$1(Error.scala:104)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at cats.data.Kleisli.apply(Kleisli.scala:132)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at com.rasterfoundry.backsplash.error.ServiceHttpErrorHandler$.$anonfun$apply$1(Error.scala:104)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at cats.data.Kleisli.apply(Kleisli.scala:132)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at com.rasterfoundry.backsplash.error.ServiceHttpErrorHandler$.$anonfun$apply$1(Error.scala:104)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at org.http4s.syntax.KleisliResponseOps.$anonfun$orNotFound$1(KleisliSyntax.scala:32)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at org.http4s.server.blaze.Http1ServerStage.$anonfun$raceTimeout$1(Http1ServerStage.scala:334)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at org.http4s.server.blaze.Http1ServerStage$$anon$2.$anonfun$run$1(Http1ServerStage.scala:180)
Nov 25 22:41:20 34.199.142.172 production/backsplash 	at flatMap @ org.http4s.server.blaze.Http1ServerStage$$anon$2.run(Http1ServerStage.scala:182)