Database is provided within the folder named 10am.sql
Import the database and run the project.
You can change the attachment limit by modifying php.ini file.
Try increasing the following values in php.ini, for example:
memory_limit = 4096M
upload_max_filesize = 3072M
post_max_size = 4096M
ADDITIONAL INFORMATION:
If the upload_max_filesize is larger than post_max_size, you must increase post_max_size so that it is bigger than upload_max_size.
If the value of post_max_size is larger than memory_limit, you must increase memory_limit so that it is larger than post_max_size.