Here's the translation of your text into English:

"I want to add a button in Zoho Creator that, when clicked, opens a Zoho authorization window and then redirects to my website to obtain API tokens.  
When running in the developer environment, I get the error: General Error  
Seems to be a problem on our side. Please contact support@eu.zohoaccounts.com along with client details."  
What am I doing wrong?  
Here's the code from Zoho Creator:"

Let me know if you'd like me to look at the code as well to help identify the issue. Common problems might include incorrect OAuth settings, misconfigured redirect URIs, or scope/permission issues.

1. <panel elementName="Panel">
2.   <pr width='fill' height='fill'>
3.     <pc padding='20px' bgColor='#FFFFFF' action='OpenURL' url='https://accounts.zoho.com/oauth/v2/auth?scope=ZohoCRM.settings.ALL,ZohoCRM.modules.ALL,ZohoCRM.users.ALL,ZohoCRM.org.ALL&amp;access_type=offline&amp;client_id=1000.4XOCYY7S5VF1P8HU2P9ZZTDITWT2OR&amp;redirect_uri=https://sa.eu.brusnika-apps.com/index.php&amp;grant_type=authorization_code' target='new-window' width='100%' hAlign='center' vAlign='middle'>
4.       <pr width='auto' height='auto'>
5.         <pc vAlign='middle'>
6.           <button marginLeft='0px' marginRight='0px' marginBottom='0px' marginTop='0px' color='#FFFFFF' size='16px' text='Open Brusnika LMS' type='rounded' bgColor='#0072F4' cornerRadius='45.6px' /> </pc>
7.       </pr>
8.     </pc>
9.   </pr>
10. </panel>