System: Ubuntu 20.04 file system ext4: SQLite version 3.31.1 2020-01-27 19:55:54 database sizes: 280M, 700M, 1.2T Contents (1 table with 7 columns (text primary and 6 numbers)) indexes (all columns with numbers and 2 indexes with 2 columns) The database has been created using a python script. Problem: After few searches using SELECT I am consistently getting : Error: database disk image is malformed. This problem appears on 4 different desktops with the same system but different databases