Hi, @Sagar_Arora_Patti, please read the community guidelines before posting!
Domnhall wrote here, create a helpful topic title, not like “help me!” (the original topic title was “plz solve my prb plz” before i modified it.)
Please give us more information, screenshot of your blocks, aia, what extensions used, etc. we cant solve it WITHOUT ANY INFORMATION!
You have a block with missing inputs. The error says the block should have 4 inputs, but you’ve only connected 3. You should be able to find which block is causing the error by pressing the “Show Warnings” button which will show a red triangle on the block causing the issue.
you also might want to try a search in the forum next time like this