During Design initialization of Implementation, the following CRITICAL WARNING is observed:
The CRITICAL WARNING indicates that the XDC file cannot be applied because it is referencing a module that cannot be found.
To fix this you must correct the reference for the XDC file (read_xdc -ref <module name>).
If there is no XDC in the project, it is likely to be part of an IP core.
IP core XDC files can be found with the "report_compile_order" command.
Verify if the IP has been correctly instantiated by comparing the instantiation template with the instantiation in the HDL code.