What does the error message "undefined reference to 'wc_ecc_get_generator' in wolfssl" mean?

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This error message indicates that the function wceccget_generator is not defined or implemented in the wolfssl library. This could be due to a missing library file, a compilation error or linking issue. The function is likely called in the code, but the library cannot find its implementation. To resolve the issue, the library file may need to be reinstalled or compiled correctly.