sen0465 only showing 0% on raspberry pi 4

I configured sen0465 on raspberry pi by following the wiring instructions - and copying the drivers.  But the reading is showing 0% for long time. 

I confirmed that the I2C sensor is actually communicating  at address 0x74 by running i2cdetect.

```

sudo apt install i2c-tools -y

i2cdetect -y 1

i2c-tools is already the newest version (4.4-2).

Summary:

  Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

00:                         -- -- -- -- -- -- -- -- 

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 

70: -- -- -- -- 74 -- -- --            

```

And here is the code - 

```

import os
import time
# We import the specific I2C class from the file DFRobot_Oxygen.py
from DFRobot_Oxygen import DFRobot_Oxygen_IIC

# Configuration
# Address 0x74 from your i2cdetect scan
O2_ADDRESS = 0x74
FILE_PATH = '/home/sciencefair/dht22/o2_data.csv'
INTERVAL = 10

def run_o2_logger():
   # Initialize the sensor using the IIC (I2C) class
   o2_device = DFRobot_Oxygen_IIC(1,O2_ADDRESS)
   
   # Header initialization
   if not os.path.exists(FILE_PATH) or os.stat(FILE_PATH).st_size == 0:
       with open(FILE_PATH, 'a') as f:
           f.write('Date,Time,Oxygen_Concentration_Pct\n')

   print(f"Starting O2 Logging at address {hex(O2_ADDRESS)}...")

   try:
       while True:
           # Read oxygen concentration
           o2_val = o2_device.get_oxygen_data(20)
           
           if o2_val is not None:
               timestamp_date = time.strftime('%m/%d/%y')
               timestamp_time = time.strftime('%H:%M:%S')
               
               data_row = f"{timestamp_date},{timestamp_time},{o2_val:.2f}\n"
               
               with open(FILE_PATH, 'a') as f:
                   f.write(data_row)
               
               print(f"Time: {timestamp_time} | Oxygen: {o2_val:.2f}%")
           
           time.sleep(INTERVAL)

   except KeyboardInterrupt:
       print("\nLogging stopped by user.")
   except Exception as e:
       print(f"\nAn error occurred: {e}")

if __name__ == "__main__":
   run_o2_logger()

```

I waited for the script to run thinking the calibration will work but the script is showing 0% . How to