phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5b7c7d2f30f4de94bc2c6ab69fe4a7b5' 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 ('5b7c7d2f30f4de94bc2c6ab69fe4a7b5', -1, 1770775858, 1770775858, 'd849d821', 12, 0, 0)

Line : 187
File : sessions.php