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 ('aebc8e5134daca84819392b0512c9bdc', -1, 1550886857, 1550886857, '03503cf8', 59, 0, 0)

Line : 187
File : sessions.php