Getting error(dict_keys(['error'])) while using Python api

## Project Robyn

## Describe issue
I am using Robyn api from Python and while running the below code after setting the arguments for hyperparameters it is giving `dict_keys(['error'])`
This is the code I am trying to run :
```
# Get response
InputCollect = robyn_api('robyn_inputs',payload=payload)
InputCollect.keys()
```
Please let me know how to resolve this error. It would be a great help. Thanks in advance.

## Provide reproducible example
This is how i setup my input variables for robyn_inputs :
```
inputArgs = {
"date_var": "date", # date format must be "2020-01-01"

"dep_var": "total_paid_apps", # there should be only one dependent variable

"dep_var_type": "conversion", # "revenue" (ROI) or "conversion" (CPA)

"prophet_vars": ["trend", "season", "weekday", "holiday"], # "trend","season", "weekday" & "holiday"

"prophet_country": "US", # input country code. Check: dt_prophet_holidays

"context_vars" : ["mdr_dummy"],

"paid_media_spends": ["total_spend_social", "total_spend_sem_brand", "total_spend_sem_nonbrand", "total_spend_linkedin", "total_spend_sem_others", "total_spend_other_paid"], # mandatory input

# "paid_media_vars": ["total_impressions_social", "total_clicks_social", "total_leads_social", "total_apps_social",
# "total_impressions_sem_brand", "total_clicks_sem_brand", "total_leads_sem_brand", "total_apps_sem_brand",
# "total_impressions_sem_nonbrand", "total_clicks_sem_nonbrand", "total_leads_sem_nonbrand", "total_apps_sem_nonbrand",
# "total_impressions_linkedin", "total_clicks_linkedin", "total_leads_linkedin", "total_apps_linkedin",
# "total_impressions_sem_others", "total_clicks_sem_others", "total_leads_sem_others", "total_apps_sem_others",
# "total_impressions_affiliate", "total_clicks_affiliate", "total_leads_affiliate", "total_apps_affiliate",
# "total_impressions_other_paid", "total_clicks_other_paid", "total_leads_other_paid", "total_apps_other_paid"], # mandatory.

"paid_media_vars": ["total_clicks_social", "total_clicks_sem_brand", "total_clicks_sem_nonbrand", "total_clicks_linkedin", "total_clicks_sem_others", "total_clicks_other_paid"],

# paid_media_vars must have same order as paid_media_spends. Use media exposure metrics like
# impressions, GRP etc. If not applicable, use spend instead.

# "organic_vars" : ["total_leads_referral", "total_apps_referral",
# "total_leads_organic", "total_apps_organic"], # marketing activity without media spend

"factor_vars" : ["mdr_dummy"], # force variables in context_vars or organic_vars to be categorical

"window_start": "2021-12-09",

"window_end": "2024-08-28",

"adstock": "weibull_pdf" # geometric, weibull_cdf or weibull_pdf.
}
```

Also wanted to ask If i want to provide impressions, clicks, leads, etc in paid_media_vars for each marketing channel defined in paid_media_spend, how can i do it? As of now I am using only one variable for each marketing spend, i.e. number of clicks. But if you see the commented paid_media_vars in my code above, there I have tried to put multiple variables like impressions, clicks, leads, etc. is it the correct way to pass multiple variables for each marketing channel in paid_media_vars ?

## Environment & Robyn version
Using ['3.11.1.9003'] version of Robyn