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 ('ef58c2c1c92a772a0c8e2124ccc30af7', -1, 1542645566, 1542645566, '36a7702a', 64, 0, 0)

Line : 187
File : sessions.php