Node-red-node-ui-table problem

i have a big problem with the table node.

i use it to display some data from my pv-system with 15 rows and 8 columns. this works fine, but i want to set other column-names and width and alignment. but if i do that, the table-node disapears from the dashboard.

if i config the table without data, this works. but if i send the data to the node, it vanishes.

why makes my data with the config for the columns such problems?

all rows have this dataset:

and the table have 15 rows as array of this data sets.