Dear H. Lee，
I'm very, very sorry. I will definitely post the questions on the corresponding boards in the future.
I have installed the most recent version of EPW with QE, but I haven't passed the test-suite-epw. If it still can't be solved in the end, I will ask you for help again in the corresponding boards. Thank you very much!
Sincerely,
Zhi Yuan
Quantum ESPRESSO 6.4 and EPW 5.1
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