phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5317d4d7d3eeaa70e3df0c5903d34b8d' 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 ('5317d4d7d3eeaa70e3df0c5903d34b8d', -1, 1770200885, 1770200885, 'd849d8a2', -4, 0, 0)

Line : 187
File : sessions.php