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 ('b29dad2ee9dbd94150fb2f90a0de78db', -1, 1566564336, 1566564336, '12e8ab12', 38, 0, 0)

Line : 187
File : sessions.php