phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5586f1fcf52bd04e66ab0bb4fea094c8' 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 ('5586f1fcf52bd04e66ab0bb4fea094c8', -1, 1767099972, 1767099972, 'd849d819', -9, 0, 0)

Line : 187
File : sessions.php