phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('5d63d6eb847bc24cd41a32dc67ae5f73', -1, 1529603921, 1529603921, '36901087', 17, 0, 0)

Line : 187
File : sessions.php