VisualForce Error: Formula Expression is required on the action attributes. To save

I have read other answer regarding the same problem but still, it doesn’t change anything at all, I still get the error…

I’m trying to save the details in the form to salesforce but it says

“Formula Expression is required on the action attributes. “

when I tried saving it.

<apex:pageBlock >
   <apex:pageBlockButtons >
      <apex:commandButton value="Save" action="!save"/>
      <apex:commandButton value="Cancel" action="!cancel"/>
   </apex:pageBlockButtons>
</apex:pageBlock >

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Answers:

Method 1

Method 2

Answers:

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Method 1

You are getting this error because you have not used formula expression in

<apex:commandButton value="Save" action="!save"/>
<apex:commandButton value="Cancel" action="!cancel"/>

for both commandbuttons.
Use as

<apex:commandButton value="Save" action="{!save}"/>
<apex:commandButton value="Cancel" action="{!cancel}"/>

Thanks,

Method 2

Formula expression implies other notation of the action attribute:

action="!save"

should be

action="{!save}"

Same for cancel action.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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