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 ('ec8a36bf2ca9d6c16b43eb9634c9fc87', -1, 1524159163, 1524159163, '36900e86', -11, 0, 0)

Line : 187
File : sessions.php