prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  GET on /v1/admin returns 404
  The expected address for built-in admin plugin is `/v1/admin/`. But if you forget the trailing slash and type `/v1/admin` you get a 404. I think it would be better to raise a 307.
  
  Related to #112 and #858.
  
  ```
  > http get localhost:8888/v1/admin/
  HTTP/1.1 200 OK
  (...)
  
  > http get localhost:8888/v1/admin
  HTTP/1.1 404 Not Found
  (...)
  ```
  
  
  GET on /v1/admin returns 404
  The expected address for built-in admin plugin is `/v1/admin/`. But if you forget the trailing slash and type `/v1/admin` you get a 404. I think it would be better to raise a 307.
  
  Related to #112 and #858.
  
  ```
  > http get localhost:8888/v1/admin/
  HTTP/1.1 200 OK
  (...)
  
  > http get localhost:8888/v1/admin
  HTTP/1.1 404 Not Found
  (...)
  ```
  
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `kinto/plugins/admin/__init__.py`
  Content:
  ```
  1 from pyramid.static import static_view
  2 
  3 
  4 def includeme(config):
  5     # Process settings to remove storage wording.
  6 
  7     # Expose capability.
  8     config.add_api_capability(
  9         "admin",
  10         version="1.6.0",
  11         description="Serves the admin console.",
  12         url="https://github.com/Kinto/kinto-admin/",
  13     )
  14 
  15     build_dir = static_view('kinto.plugins.admin:build', use_subpath=True)
  16     config.add_route('catchall_static', '/admin/*subpath')
  17     config.add_view(build_dir, route_name="catchall_static")
  18
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/kinto/plugins/admin/__init__.py b/kinto/plugins/admin/__init__.py
  --- a/kinto/plugins/admin/__init__.py
  +++ b/kinto/plugins/admin/__init__.py
  @@ -1,4 +1,5 @@
   from pyramid.static import static_view
  +from pyramid.httpexceptions import HTTPTemporaryRedirect
   
   
   def includeme(config):
  @@ -15,3 +16,10 @@
       build_dir = static_view('kinto.plugins.admin:build', use_subpath=True)
       config.add_route('catchall_static', '/admin/*subpath')
       config.add_view(build_dir, route_name="catchall_static")
  +
  +    # Setup redirect without trailing slash.
  +    def admin_redirect_view(request):
  +        raise HTTPTemporaryRedirect(request.path + '/')
  +
  +    config.add_route('admin_redirect', '/admin')
  +    config.add_view(admin_redirect_view, route_name="admin_redirect")
  
verification_info: {"golden_diff": "diff --git a/kinto/plugins/admin/__init__.py b/kinto/plugins/admin/__init__.py\n--- a/kinto/plugins/admin/__init__.py\n+++ b/kinto/plugins/admin/__init__.py\n@@ -1,4 +1,5 @@\n from pyramid.static import static_view\n+from pyramid.httpexceptions import HTTPTemporaryRedirect\n \n \n def includeme(config):\n@@ -15,3 +16,10 @@\n     build_dir = static_view('kinto.plugins.admin:build', use_subpath=True)\n     config.add_route('catchall_static', '/admin/*subpath')\n     config.add_view(build_dir, route_name=\"catchall_static\")\n+\n+    # Setup redirect without trailing slash.\n+    def admin_redirect_view(request):\n+        raise HTTPTemporaryRedirect(request.path + '/')\n+\n+    config.add_route('admin_redirect', '/admin')\n+    config.add_view(admin_redirect_view, route_name=\"admin_redirect\")\n", "issue": "GET on /v1/admin returns 404\nThe expected address for built-in admin plugin is `/v1/admin/`. But if you forget the trailing slash and type `/v1/admin` you get a 404. I think it would be better to raise a 307.\r\n\r\nRelated to #112 and #858.\r\n\r\n```\r\n> http get localhost:8888/v1/admin/\r\nHTTP/1.1 200 OK\r\n(...)\r\n\r\n> http get localhost:8888/v1/admin\r\nHTTP/1.1 404 Not Found\r\n(...)\r\n```\r\n\r\n\nGET on /v1/admin returns 404\nThe expected address for built-in admin plugin is `/v1/admin/`. But if you forget the trailing slash and type `/v1/admin` you get a 404. I think it would be better to raise a 307.\r\n\r\nRelated to #112 and #858.\r\n\r\n```\r\n> http get localhost:8888/v1/admin/\r\nHTTP/1.1 200 OK\r\n(...)\r\n\r\n> http get localhost:8888/v1/admin\r\nHTTP/1.1 404 Not Found\r\n(...)\r\n```\r\n\r\n\n", "before_files": [{"content": "from pyramid.static import static_view\n\n\ndef includeme(config):\n    # Process settings to remove storage wording.\n\n    # Expose capability.\n    config.add_api_capability(\n        \"admin\",\n        version=\"1.6.0\",\n        description=\"Serves the admin console.\",\n        url=\"https://github.com/Kinto/kinto-admin/\",\n    )\n\n    build_dir = static_view('kinto.plugins.admin:build', use_subpath=True)\n    config.add_route('catchall_static', '/admin/*subpath')\n    config.add_view(build_dir, route_name=\"catchall_static\")\n", "path": "kinto/plugins/admin/__init__.py"}], "after_files": [{"content": "from pyramid.static import static_view\nfrom pyramid.httpexceptions import HTTPTemporaryRedirect\n\n\ndef includeme(config):\n    # Process settings to remove storage wording.\n\n    # Expose capability.\n    config.add_api_capability(\n        \"admin\",\n        version=\"1.6.0\",\n        description=\"Serves the admin console.\",\n        url=\"https://github.com/Kinto/kinto-admin/\",\n    )\n\n    build_dir = static_view('kinto.plugins.admin:build', use_subpath=True)\n    config.add_route('catchall_static', '/admin/*subpath')\n    config.add_view(build_dir, route_name=\"catchall_static\")\n\n    # Setup redirect without trailing slash.\n    def admin_redirect_view(request):\n        raise HTTPTemporaryRedirect(request.path + '/')\n\n    config.add_route('admin_redirect', '/admin')\n    config.add_view(admin_redirect_view, route_name=\"admin_redirect\")\n", "path": "kinto/plugins/admin/__init__.py"}]}