What version of concrete5 are you using?
I am using Concrete 22.214.171.124
One guess is that your last upgrade was incomplete and there is a table column missing.
I recommend updating to the latest version of concrete5.
There is a current bug issue for this with a solution:
In the meantime I have upgraded another website of mine (www.tonfro.co.za) on a different webhost to Concrete 126.96.36.199 and a similar SQL error occurs now.