phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '60d2cbc269178fc9cbc2245ea4866783' 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 ('60d2cbc269178fc9cbc2245ea4866783', -1, 1770000411, 1770000411, 'd849d837', 2, 0, 0)

Line : 187
File : sessions.php