phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a7e7dc13635471e7f7afbee51019af43' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a7e7dc13635471e7f7afbee51019af43', -1, 1769550674, 1769550674, 'd849d86e', 1, 0, 0)

Line : 187
File : sessions.php