Add a message about what is failing

Author: Takahiro-Yoko

modules/exploits/linux/http/selenium_greed_chrome_rce_cve_2022_28108.rb

@@ -89,7 +89,7 @@ def check
     rescue JSON::ParserError
       return Exploit::CheckCode::Unknown('Unable to determine the version.')
     end
-    return Exploit::CheckCode::Unknown unless json_data && json_data.include?('version') && json_data['version']
+    return Exploit::CheckCode::Unknown('Unable to determine the version.') unless json_data && json_data.include?('version') && json_data['version']
 
     # Extract the version
     version = Rex::Version.new(json_data['version'])