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 ('e494e3e4bd4a97a03309a14b45b87529', -1, 1550886979, 1550886979, '03503cf8', 59, 0, 0)

Line : 187
File : sessions.php