phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd793fc6507be8e9447dd6f9ab7ed24e0' 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 ('d793fc6507be8e9447dd6f9ab7ed24e0', -1, 1792039011, 1792039011, '12610e51', 0, 0, 0)

Line : 187
File : sessions.php