404 error for a lts-15.3 file

[Konstantine Rybnikov]

Getting a 404  error for this file https://raw.githubusercontent.com/fpco/lts-haskell/master/lts-15.3.yaml , while 13.5 appears to be working fine https://raw.githubusercontent.com/fpco/lts-haskell/master/lts-13.5.yaml

Full error upon "stack build":

Getting project config file from STACK_YAML environment
Downloading lts-15.3 build plan ...
RedownloadInvalidResponse Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/fpco/lts-haskell/master//lts-15.3.yaml"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
}
 "/home/kb/.stack-docker/build-plan/lts-15.3.yaml" (Response {responseStatus = Status {statusCode = 404, statusMessage = "Not Found"}, responseVersion = HTTP/1.1, responseHeaders = [("Content-Security-Policy","default-src 'none'; style-src 'unsafe-inline'; sandbox"),("Strict-Transport-Security","max-age=31536000"),("X-Content-Type-Options","nosniff"),("X-Frame-Options","deny"),("X-XSS-Protection","1; mode=block"),("Via","1.1 varnish (Varnish/6.0)"),("X-GitHub-Request-Id","46D2:37D9:10D42C:13B9B9:5E6AB85B"),("Content-Length","15"),("Accept-Ranges","bytes"),("Date","Thu, 12 Mar 2020 22:32:23 GMT"),("Via","1.1 varnish"),("Connection","keep-alive"),("X-Served-By","cache-vie21639-VIE"),("X-Cache","HFM, HIT"),("X-Cache-Hits","0, 1"),("X-Timer","S1584052343.058486,VS0,VE1"),("Vary","Authorization,Accept-Encoding"),("Access-Control-Allow-Origin","*"),("X-Fastly-Request-ID","640025e45faa352ea06b23f97834cdee85e91e19"),("Expires","Thu, 12 Mar 2020 22:37:23 GMT"),("Source-Age","27")], responseBody = (), responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose})

[Konstantine Rybnikov]

Ah, sorry, probably need to use the latest stack version.