phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '52159c1111af6f5bd96dad5febf63df4' 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 ('52159c1111af6f5bd96dad5febf63df4', -1, 1770780951, 1770780951, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php