phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5caa8c563e1f4952ecf0b9049d750c4c' 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 ('5caa8c563e1f4952ecf0b9049d750c4c', -1, 1763026503, 1763026503, 'd849d88d', -4, 0, 0)

Line : 187
File : sessions.php