phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '34c9c057a0db9b63c172aa478cc4a88f' 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 ('34c9c057a0db9b63c172aa478cc4a88f', -1, 1752194674, 1752194674, 'd849d87d', -2, 0, 0)

Line : 187
File : sessions.php