Forward slash problem was caused by a reverse proxy - rollback

.env.example

@@ -12,11 +12,10 @@ TRANSFER_TOKEN_SALT=
 APP_DIRECTORY=/opt
 NODE_ENV=development
 
-# Miscellaneous (No forward slashes in admin path!)
-PUBLIC_URL=https://api.enderman.ch/cms
-ADMIN_PATH=panel
-STRAPI_ADMIN_BACKEND_URL=
+# Miscellaneous (NO trailing slash under reverse proxy!)
 STRAPI_TELEMETRY_DISABLED=true
+STRAPI_ADMIN_BACKEND_URL=https://api.enderman.ch/cms
+ADMIN_PATH=panel
 
 # Database
 DATABASE_CLIENT=postgres
@@ -26,4 +25,3 @@ DATABASE_NAME=cms
 DATABASE_USERNAME=postgres
 DATABASE_PASSWORD=password
 DATABASE_SSL=false
-