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 ('abf768aa1d04dd40741682a5b0dce77c', -1, 1524345024, 1524345024, '36e06486', 21, 0, 0)

Line : 211
File : sessions.php