One problem I see is that you are loading Excel data using two different Vensim methods in your model.
GET DIRECT DATA
works without needing Excel to load while your model is running.
GET XLS DATA
requires Excel running with Vensim in order to work.
Because Excel is not running on the server, the GET XLS DATA statement will not work online.
To fix this, simply replace the four instances of GET XLS DATA in your model with GET DIRECT DATA.
Also, make sure that every Excel spreadsheet called by your model is in the same directory as your model and file name capitalization matches what is used in your model. On Windows, file name capitalization doesn’t matter but on Linux it does. Your file ‘calibration.xls’ should be changed to 'Calibration.xls’