Hi @michiel ,
Thanks for your response.
No I didn't change any of the configuration files.
I just created a simple product with those customizable options.
I also looked for the path /tmp/opt/bitnami/... but i didn't find any directory as opt inside /tmp.
can it be the cause of the issue.
When I create configurable product with customizable option i get different error as
"You need to choose options for your item."