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 ('15aee3aa2b36dc38c964b2f4ec506a34', -1, 1542645545, 1542645545, '36a7702a', 66, 0, 0)

Line : 187
File : sessions.php