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 ('aca8499cc2ce93f5fbfc3e1cde29f415', -1, 1539796366, 1539796366, '36c60f14', 66, 0, 0)

Line : 187
File : sessions.php