Cart totals displays 0

[tvgarden]

Hi,

Cart totals displays 0.

This code below is getting 'null'  for subtotal value:

$this->_checkoutSession->getQuote()->collectTotals()->save();

Please find the image:

https://prnt.sc/od4sy7

Any suggestions to fix this?

Thanks in advance.

[tvgarden]

Can anyone give me some suggestions?

Or any links to articles?