I generated a WebToLead form from within SuiteCRM.
At the top of the generated form the code includes two files: cache/include/javascript/calendar.js?v=bW1yEUlObxQ1Wgix2igB8A"
and cache/include/javascript/sugar_grp1.js?v=kwwRdgcYuajjc1sv42WWlA"
Since I was getting an error in my logs because calendar.js was missing I went and checked if those two files actually exist.
While sugar_grp1.js does exist in the cahe directory, calendar.js is not there.
I tried all the repairs available on javascript files found in Admin->Repair
While a few of them regenerated all the files found in this cache folder, none of them did anything related to calendar.js
Fortunately my forms do not have date inputs that require the calendar.js file but I wonder why the WebToLeadForm uses a file from cache, which is not there and is not replaced by any of the Repairs available (including Quick Repair and Rebuild)
I believe that this is a bug either in the WebToLead form generator or in the Repair scripts.
For the time being I copied the script from include/javascript, but I know that I will have to keep an eye on it to avoid getting the same error again.