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 ('3b502ae531a7f9d4af96197d17b37cce', -1, 1532208117, 1532208117, '3651c38c', 4, 0, 0)

Line : 187
File : sessions.php