We have a Low Variable using Matrix with 3 columns.
Two columns are raw text and one is a playa list of channel entries.
All has been working fine, there were about 60 rows so far - all of a sudden when we go to manage the low variable to add more content we see a blank screen (attached)
The data that has been input is still there (can see it on the front end)
Not sure how to fix or trouble shoot this.
ee2.6.1 / lv 2.3.5 / Matrix 2.5.5