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 ('fcd5405e4c2a8788a91d2f8a24318001', -1, 1550316015, 1550316015, '36eb37fd', -4, 0, 0)

Line : 186
File : sessions.php