Error when running JUM_A.sh

[RacconC]

Hi， The error is reported as follows can't open input2 file: No such file or directory at /***/JUM_3.0.0/preparing_intron_retention_count_table_long_intron.pl line 20. I can make sure this file exists. And what can I do to fix this issue? And this step is so time consuming that it is frustrating to run it for two days with an error.