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 ('5c95be89ed8a6d16619d054d3af0f51d', -1, 1566747562, 1566747562, '12ce0fd7', -4, 0, 0)

Line : 187
File : sessions.php