FIX build finished time bug

app/helpers/ci/builds_helper.rb

@@ -1,7 +1,7 @@
 module Ci::BuildsHelper
   def format_utc_time(unix_time)
     Rails.logger.info "00000000000000 #{unix_time}"
-    return nil if unix_time.blank?
+    return nil if unix_time == 0
     DateTime.strptime(unix_time.to_s,'%s').strftime("%Y-%m-%d %H:%M")
   end