Using the MQTT client driver, an error occurred.

[laih]

When using the MQTT client driver, I have connected to the MQTT broker and can view the message logs of the subscribed topics in the communication log. However, after enabling JavaScript, when I ran it again and received the subscribed messages, an error occurred: “Error: Could not find a part of the path ‘c:\program files\SCADA\ScadaComm\Config\'”.
I know this is caused by the lack of the JavaScript file. But how should I create and configure this JavaScript file?

[laih]

there is my logs.

2026-07-23 15:23:30 Connect to 192.168.31.183:1883
Connected successfully

2026-07-23 15:23:30 Subscribe to topic
Subscribed successfully. Topic count: 1

2026-07-23 15:23:59 Receive /v1/devices/1004/datas = {
“humidity”:15,
…
Subscribed devices: 4
Error: Could not find a part of the path ‘C:\Program Files\SCADA\ScadaComm\Config\’.

2026-07-23 15:33:44 Receive /v1/devices/1004/datas = {
“humidity”:15,
…
Subscribed devices: 4
Error: Could not find a part of the path ‘C:\Program Files\SCADA\ScadaComm\Config\’.

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