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 ('56f25e01cb9b0d69a436ee9e991a649c', -1, 1542576007, 1542576007, '365cc159', 0, 0, 0)

Line : 189
File : sessions.php