reported by two people in https://forum.matomo.org/t/error-while-updating-to-4-0-0-b1-have-to-change-some-columns-to-text-or-blobs/39482

Critical Error during the update process:
/home/members/artisticactivism/sites/c4aa.org/web/matomo_stats/core/Updates/4.0.0-b1.php: Error trying to execute the migration 'ALTER TABLE matomo_log_visit ADD COLUMN visitor_seconds_since_first INT(11) UNSIGNED NULL, ADD COLUMN visitor_seconds_since_order INT(11) UNSIGNED NULL, ADD COLUMN visitor_seconds_since_last INT(11) UNSIGNED NULL, ADD COLUMN profilable TINYINT(1) NULL;'. The error was: SQLSTATE[42000]: Syntax error or access violation: 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 8126. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs