Error message when installing ADSelfService Plus Service Pack

Error message when installing ADSelfService Plus Service Pack

I'm updating ADSelfService Plus with service pack ManageEngine_ADSelfService_Plus_6_1_0_SP-1_6_0 and received error message during pre-validation:
"Can't create/write to file "file path" #sql_1f18_0.MYi (Errcode: 2)

 I need to install this update due to the security vulnerability with this product.