The Fermi LAT GRB table is offline until further notice. Thank you for your patience.
As an alternative, you can use the Second LAT GRB Catalog in HEASARC's Browse system which has been updated to add LAT detected GRBs that occurred after the publication of the paper in 2018. They were analyzed using the same procedure as the original catalog. The catalog will be updated periodically with new GRBs.
All analysis results presented here are preliminary and are not intended as an official catalog of Fermi-LAT detected GRBs. Please consult the table's caveat page for analysis details and other important information. The table is available in a machine readable format here.