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 ('8d0237c1f21c8e9e0f8065cf177d4717', -1, 1547727090, 1547727090, '22e0663c', 0, 0, 0)

Line : 189
File : sessions.php