phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8126c423dc40a3c7b2d3e4525f362e4b' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8126c423dc40a3c7b2d3e4525f362e4b', -1, 1770151396, 1770151396, 'd849d8a2', -4, 0, 0)

Line : 187
File : sessions.php