Could not verify

Unable to create a new remote session. Please check the server log for more details. Original error: An unknown server-side error occurred while processing the command. Original error: Cannot verify the signature of ‘C:\Users\ayaz raisani\AppData\Roaming\npm\node_modules\appium\node_modules\appium-uiautomator2-server\apks\appium-uiautomator2-server-v4.21.1.apk’. Original error: Could not find ‘apksigner.jar’ in [“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\platform-tools\apksigner.jar”,“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\emulator\apksigner.jar”,“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\cmdline-tools\latest\bin\apksigner.jar”,“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\tools\apksigner.jar”,“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\tools\bin\apksigner.jar”,“C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools\apksigner.jar”]. Do you have Android Build Tools installed at ‘C:\Users\ayaz raisani\AppData\Local\Android\Sdk\platform-tools’?

what the answer to error?

yes i have android build tools installed already still I’m facing this issue