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 ('cf7751bffce8232b2d835b2141e89df8', -1, 1711698704, 1711698704, '03e3fbc2', -4, 0, 0)

Line : 172
File : sessions.php