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 ('c8d6d5f75f24d495c3a8d8468029babe', -1, 1516538823, 1516538823, '36a77e6a', 8, 0, 0)

Line : 187
File : sessions.php