In the file
vendor/wapplersystems/core-upgrader/Classes/Updates/v12/ChangeCollationUpdate.php
line 123
replace :
if ($column->getType()->getName() === 'string' || $column->getType()->getName() === 'text') {
by :
if ($column->getType() === 'string' || $column->getType() === 'text') {
In the file
vendor/wapplersystems/core-upgrader/Classes/Updates/v12/ChangeCollationUpdate.php
line 123
replace :
if ($column->getType()->getName() === 'string' || $column->getType()->getName() === 'text') {
by :
if ($column->getType() === 'string' || $column->getType() === 'text') {