Input validation failed error

[jnarayan81]

When I run using "./sybr.sh -j 4 " return the error "Input validation failed"

`(sybr) jitenda@jitenda-Latitude-7490:~/compGenomics/Sybr-main$ ./sybr.sh -j 4
[INFO] Using default step size: 30000

┏━┓╻ ╻┏┓ ┏━┓
┗━┓┗┳┛┣┻┓┣┳┛
┗━┛ ╹ ┗━┛╹┗╸

========================================
Snakemake Pipeline

[INFO] Validating input files...
✗ Validation failed for the following files:

File: directory_error
- D
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- /
- S
- a
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- a
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[ERROR] Input validation failed
[ERROR] Use --skip-validation to bypass validation or fix input files
`