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 ('3dc4801cac5b9b7844b7d0b1fde03ca3', -1, 1566379092, 1566379092, '03e2fb51', 20, 0, 0)

Line : 187
File : sessions.php