metric is NaN

[JacoboJin]

I met this problem while I run the test.sh root@Ic75ba579f00d014e0:/hy-tmp/EGVSR# bash test.sh ./experiments_BD/EGVSR/001/ 2022-07-25 15:10:19,482 [INFO]: ======================================== 2022-07-25 15:10:19,482 [INFO]: Testing model: EGVSR_iter420000 2022-07-25 15:10:19,482 [INFO]: ======================================== 2022-07-25 15:10:23,526 [INFO]: Testing on test1: Vid4 2022-07-25 15:10:24,329 [INFO]: Average /usr/local/lib/python3.8/dist-packages/numpy/core/fromnumeric.py:3474: RuntimeWarning: Mean of empty slice. return _methods._mean(a, axis=axis, dtype=dtype, /usr/local/lib/python3.8/dist-packages/numpy/core/_methods.py:189: RuntimeWarning: invalid value encountered in double_scalars ret = ret.dtype.type(ret / rcount) 2022-07-25 15:10:24,331 [INFO]: PSNR: nan (x1.0) 2022-07-25 15:10:24,331 [INFO]: LPIPS: nan (x1.0) 2022-07-25 15:10:24,331 [INFO]: tOF: nan (x1.0) 2022-07-25 15:10:24,331 [INFO]: ---------------------------------------- 2022-07-25 15:10:24,331 [INFO]: Testing on test2: ToS3 2022-07-25 15:10:25,094 [INFO]: Average 2022-07-25 15:10:25,095 [INFO]: PSNR: nan (x1.0) 2022-07-25 15:10:25,095 [INFO]: LPIPS: nan (x1.0) 2022-07-25 15:10:25,095 [INFO]: tOF: nan (x1.0) 2022-07-25 15:10:25,095 [INFO]: ---------------------------------------- 2022-07-25 15:10:25,095 [INFO]: Finish testing 2022-07-25 15:10:25,095 [INFO]: ========================================

So I should do what and I am troubled