phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c5cc4d990d39958de87f4618b19e5d70' for key 'PRIMARY'

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c5cc4d990d39958de87f4618b19e5d70', -1, 1771862825, 1771862825, 'd849d878', -4, 0, 0)

Line : 187
File : sessions.php