Fatel Error On Woo Colmmerce Store

Hi,

Our website up to recently has been running without any issues but over last couple of days we have had the following happen & have not got a clue on how to fix, PLEASE HELP!!!!

Fatal error: Uncaught : Call to undefined function define() in /home/upscentr/public_html/onlinestore/index.php:0 Stack trace: #0 {main} thrown in /home/upscentr/public_html/onlinestore/index.php on line 0

Budget: GBP 180 (Fixed Price)

Proposals: 26 freelancers have applied