phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1406 Data too long for column 'session_admin' at row 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7ea1f53f0ef1d9b39f0dea4e6869e370', -1, 1711634458, 1711634458, '12ccd6cd', -4, 0, 0)

Line : 172
File : sessions.php