exception

foo.clj

ERROR in (student-test) (request.clj:27)
Uncaught exception, not in assertion.
expected: nil
  actual: java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.String
 at ring.util.request$content_length.invoke (request.clj:27)
    ring.middleware.multipart_params$request_context$reify__20167.getContentLength (multipart_params.clj:29)
    org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init> (FileUploadBase.java:955)
    org.apache.commons.fileupload.FileUploadBase.getItemIterator (FileUploadBase.java:310)
    ring.middleware.multipart_params$file_item_seq.invoke (multipart_params.clj:45)
    ring.middleware.multipart_params$parse_multipart_params.invoke (multipart_params.clj:62)
    ring.middleware.multipart_params$multipart_params_request.doInvoke (multipart_params.clj:90)
    clojure.lang.RestFn.invoke (RestFn.java:423)
    ring.middleware.multipart_params$wrap_multipart_params$fn__20196.invoke (multipart_params.clj:117)
    ring.middleware.params$wrap_params$fn__20222.invoke (params.clj:64)
    ring.middleware.cookies$wrap_cookies$fn__3518.invoke (cookies.clj:161)
    ring.middleware.absolute_redirects$wrap_absolute_redirects$fn__20350.invoke (absolute_redirects.clj:36)
    ring.middleware.resource$wrap_resource$fn__20258.invoke (resource.clj:28)
    ring.middleware.x_headers$wrap_xss_protection$fn__19990.invoke (x_headers.clj:71)
    ring.middleware.x_headers$wrap_frame_options$fn__19980.invoke (x_headers.clj:38)
    hiccup.middleware$wrap_base_url$fn__20422.invoke (middleware.clj:12)
    ring.middleware.format_params$wrap_format_params$fn__20804.invoke (format_params.clj:113)
    ring.middleware.format_response$wrap_format_response$fn__20933.invoke (format_response.clj:174)