phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6c253d54f3a307781823f497e29d4482' 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 ('6c253d54f3a307781823f497e29d4482', -1, 1770322350, 1770322350, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php