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 ('8bcd308a99d1bbb51ead3a5d25e28825', -1, 1519238827, 1519238827, '36e22175', 1, 0, 0)

Line : 187
File : sessions.php