Errors and inconveniences with the plugin

Hello! How can I solve plugin errors and why do they appear?

I have the ba book everything plugin and the ba Hotel lite prome theme has errors.

Sometimes the reserve now button does not work, it stays on the same page, it does not calculate the price correctly, I look for a date and when I select the product I get another. It seems that some code link is broken. Do not know!

I would like to know how I can solve these errors please.

If the plugin worked properly for me, that would be great

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