api: add curl internal error check to log_diagnose

api

@@ -2575,6 +2575,12 @@ If this keeps happening, see: https://stackoverflow.com/questions/66366582")
     error_caption+=("Download failed. Check your internet connection and firewall, then try again.")
     error_type="internet"
   fi
+
+  if grep -q "curl: (.*) HTTP/2 stream .* was not closed cleanly: INTERNAL_ERROR (err .*)"
+    error_caption+=("Download failed due to an internal curl error. This could be an internet issue or hardware problem.
+If you are overclocking, try reverting to stock clocks. Additionally, check your internet connection and firewall, then try again.")
+    error_type="internet"
+  fi
 
   if grep -qF "errorCode=24 Authorization failed." <<<"$errors" ;then
     error_caption+=("Download failed with the \"Authorization failed\" error. This sometimes happens during a download on bad Wi-Fi, but if this problem persists, please reach out to the Pi-Apps developers.")