URGENT: Error Logs, Need Immediate Repair, 2 lines of Code

My host has told me that I have 2 error logs that need to be resolved or my account will be suspended tomorrow. I need these fixed before then. This is only 2 lines of code that need to be repaired but I do not know what to do. I will need you to fix these asap! HERE IS THERE MESSAGE: Your site is repeatedly encountering an error, which is generating a very large number of log lines in our server wide error logging. This error will need to be corrected or suppressed due to how much space it is taking in our logs. [STDERR] PHP Warning: Missing argument 2 for currencies::display_price(), called in /home/ironside/public_html/[login to view URL] on line 74 and defined in /home/ironside/public_html/includes/classes/[login to view URL] on line 112