ECP5 / Diamond 3.14: Why does my design get a Map device oversize error related to PLL for LFE5U-12F in with Diamond 3.14, but completes map successfully in earlier releases of Diamond software?

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  Description: This is encountered if the signal is being defined (for example in constraint file) and that signal is optimized (or the net does not actually exist in the design) by the synthesis tool, To fix the error add in the following attribute to ...

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