remove wildcards

frangiPANe/snakefiles/plot_fasta.smk

 rule plot_fasta:
     input:
-        ref=rules.bwa_index.input.ref
+        ref= f"{frangipane_obj.path_reference_file}"
     output: 
         png = f"{frangipane_obj.path_stat_plot}/00_ref.png",
         csv = f"{frangipane_obj.path_stat_sum}/00_ref.txt"