plot returns some one kind of error or the other

[pannet1]

my df has the data of this simple format.

Date              
2023-08-08  -23.15
2023-08-10   -6.85
2023-08-11   25.45
2023-08-14    35.0
2023-08-16   19.95

this is what i do with quantstats

  qs.extend_pandas()
    df.plot_earnings()



Process SpawnProcess-1:
Traceback (most recent call last):
  File "/home/pannet1/Programs/py/backtesting/quant-bt/quant_bt/simple.py", line 131, in <module>
    df.plot_earnings()
  File "/home/pannet1/Programs/py/backtesting/lib/python3.9/site-packages/quantstats/_plotting/wrappers.py", line 307, in earnings
    "${:,}".format(round(returns.values[-1] - returns.values[0], 2))
TypeError: type numpy.ndarray doesn't define __round__ method

can you guide me on how to resolve this

[uberdeveloper]

Quantstats expects a pandas series of percentage returns with datetime index

import quantstats as qs
import pandas as pd
dates = ['2023-08-08','2023-08-10', '2023-08-11', '2023-08-14', '2023-08-16']
values =[-23.15,-6.85,25.45,35,19.95]
dates = [pd.to_datetime(date) for date in dates]
df = pd.DataFrame(values, columns=['returns'], index=dates)
capital = 1000.0
df['returns'] = df['returns'] / capital # Converting to returns 
qs.reports.metrics(df.returns, cumulative=False)  # turn off compounding

This gives me the following output

                    Strategy
------------------  ----------
Start Period        2023-08-08
End Period          2023-08-16
Risk-Free Rate      0.0%
Time in Market      100.0%

Cumulative Return   5.02%
CAGR﹪              367.96%

Sharpe              6.61
Prob. Sharpe Ratio  78.14%
Sortino             14.82
Sortino/√2          10.48
Omega               2.68

Max Drawdown        -0.69%
Longest DD Days     1

Gain/Pain Ratio     1.68
Gain/Pain (1M)      -

Payoff Ratio        1.79
Profit Factor       2.68
Common Sense Ratio  4.46
CPC Index           2.87
Tail Ratio          1.66
Outlier Win Ratio   1.29
Outlier Loss Ratio  1.5

MTD                 5.02%
3M                  5.02%
6M                  5.02%
YTD                 5.02%
1Y                  5.02%
3Y (ann.)           367.96%
5Y (ann.)           367.96%
10Y (ann.)          367.96%
All-time (ann.)     367.96%

Avg. Drawdown       -0.69%
Avg. Drawdown Days  1
Recovery Factor     7.33
Ulcer Index         0.0
Serenity Index      55.39