Upgrade error 403 EspoCRM 5.1.2

[tanya]

Do you use espo cloud solution or other hosting?

[canan]

H Tanja, I installed EspoCRM on my hosted server.

[tanya]

could you check the access to 'data/upload' folder?

[canan]

Access right on 'data/upload' folder is 777

[tanya]

1. check data/config.php for option 'restrictedMode'
2. better is to set correct permission, 777 is not safe
3. check data/logs and apache logs for the reason of error