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 ('d560e033c6a1f4f4a62a6c6a4ff02e29', -1, 1529811148, 1529811148, '36e0ff11', 0, 0, 0)

Line : 187
File : sessions.php