Events list: sort by Live/Not lie doesn't work, sort by community gives white screen crash

[BradHN1]

Describe the bug
On All Events page, if you click the heading to sort by community, the screen goes white, and the console message is:

which indicates the index is wrong.
ALso sort by Live/Notlive doesn't work but presumably this is the same issue

[BradHN1]

@abdullai-t @frimpongopoku - I've fixed this bug which happens over and over again. A column gets added or moved, and elsewhere in the code a column index is specified as a number. You only find out about it when someone attempts to sort or filter.
I'd like to see these routines specify the list of columns by name at the top, and column indices come from finding the column by name, never hardcoded.