[SQL] Error running SQL/9999-99-99-drop_tables.sql due to physiological_file

[zaliqarosli]

Describe the bug

lorisadmin@copn-dev:/var/www/loris$ mysql < SQL/9999-99-99-drop_tables.sql
ERROR 1451 (23000) at line 27: Cannot delete or update a parent row: a foreign key constraint fails

line 27:

DROP TABLE IF EXISTS `physiological_file`;

I think the issue is because the physiological_file references itself with the ParentID column
edit: not sure what is causing this foreign key constraint fail

To Reproduce
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What did you expect to happen?
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Browser Environment (please complete the following information):

• OS: [e.g. Plan9, HURD, Oberon, etc]
• Browser [e.g. chrome, firefox] (note that only these two browsers are supported)
• Version [e.g. 22]

Server Environment (if known):
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• LORIS Version: [e.g. 22.0.0]
• Linux distribution and Version: [e.g. Ubuntu 16.04, CentOS 7]
• MySQL/MariaDB Version: [e.g. MySQL 5.7, MariaDB 10.3]

Additional context
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[CamilleBeau]

This may be fixed, should be tested