[Python] AttributeError: 'Wildcards' object has no attribute 'samples'

Hi snakemake doesn't seem to recognize my wildcards in my rule modkit. i defined all possible outputs and assigned to a list modkit_outputs. however, i get the error below and i'm not sure how to fix it.

Building DAG of jobs...

InputFunctionException in rule modkit in file //data1/greenbab/users/ahunos/apps/dorado_ont_wf/test_bedgraph.smk, line 29:
Error:
AttributeError: 'Wildcards' object has no attribute 'samples'
Wildcards:

Traceback:
File "//data1/greenbab/users/ahunos/apps/dorado_ont_wf/test_bedgraph.smk", line 31, in <lambda> (rule modkit, line 40, //data1/greenbab/users/ahunos/apps/dorado_ont_wf/test_bedgraph.smk)


parent_dir = "/data1/greenbab/users/ahunos/apps/dorado_ont_wf/"
configfile: parent_dir + "config/config.yaml"
configfile: "/data1/greenbab/users/ahunos/apps/dorado_ont_wf/config/samples_009TN_044TN.yaml"

set_species = "human"

#make sample list of bedgraphs
motifs=["h", "m", "C"]
strands=["positive", "negative"]
minCoverages=[5, 10]

samplesFromConfig=list(config["samples"].keys())#.tolist()
print(f"{samplesFromConfig}")


modkit_outputs = [
f"results/modkit/{sample}/{sample}_{motif}_CG0_{strand}.bedgraph"
for sample in samplesFromConfig
for motif in motifs
for strand in strands
]

print(f"modkit outputs\n {modkit_outputs}\n")

rule all:
input:
modkit_outputs

rule modkit:
input:
lambda wildcards: config["samples"][wildcards.samples]
output:
outputs=modkit_outputs
priority: 100
params:
reference_genome=lambda wildcards: config["mm10"] if set_species == "mouse" else config["hg38"],
modkit_threads=16,
modkit_prob_percentiles=0.1,
outdir= "results/modkit/{samples}/"
shell:
"""
modkit pileup --region chr17 --threads {params.modkit_threads} --bedgraph {input} {params.outdir} \
--prefix {wildcards.samples} --cpg --combine-mods --ref {params.reference_genome}

"""

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