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 ('e660dc0b02335b2d266a972b19f5e13f', -1, 1550395801, 1550395801, '36e217a0', -8, 0, 0)

Line : 186
File : sessions.php