Column hide v7.1

In dhtmlx grid 7.0 if I set ah hidden column without putting the header parameter
the grid worked well. Now If I don’t set a column: header the grid isn’t rendered.

In console I see this error:

TypeError: Cannot read property ‘reduce’ of undefined at Object.e.normalizeColumns

It would be better id the error that arises shows that the problem is the lack of the header field in column configuration.

The header attribute of the column is a mandataory parameter of the grid:
It should be added to your config for sure.