The ID argument passed to the getCourseById function is not of type numeric.
Tuesday, September 17, 2019 22:51:01
Natural Stone Institute Disclaimer These courses are written as a general guideline. The Natural Stone Institute and its Member companies have neither liability nor can they be responsible to any person or entity for any misunderstanding, misuses, or misapplication that would cause loss or damage of any kind, including loss of rights, material, or personal injury, or alleged to be caused directly or indirectly by the information contained in these document.
380 E. Lorain Street
Oberlin, OH 44074
P: 440-250-9222 F: 440-774-9222