Get this error on the picture while using Acquire Waveform

Hi experts,
I get this error on the picture while using Acquire Waveform. How can I fix it? Can you provide me solution step by step to resolve the following error message? I would be really grateful to you.

Error 85 occurred at Scan From String (arg 1) in
Icwave Wait for Acquisition Complete.vi-
>Icwave Read Single Waveform.vI->Icwave
Acquire Waveform In Loop_NoReset.vi
Possible reason(s):
LabVIEW: Scan failed.
Continue Stop
