phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '87c5855dc350eb72113422696fa3d5ad' 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 ('87c5855dc350eb72113422696fa3d5ad', -1, 1774620364, 1774620364, 'ba02a013', -2, 0, 0)

Line : 187
File : sessions.php