Fix 500 errors entering a webhook URL not encoded

app/services/web_hook_service.rb

@@ -54,7 +54,9 @@ class WebHookService
       http_status: response.code,
       message: response.to_s
     }
-  rescue SocketError, OpenSSL::SSL::SSLError, Errno::ECONNRESET, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Net::OpenTimeout, Net::ReadTimeout, Gitlab::HTTP::BlockedUrlError, Gitlab::HTTP::RedirectionTooDeep, Gitlab::Json::LimitedEncoder::LimitExceeded => e
+  rescue SocketError, OpenSSL::SSL::SSLError, Errno::ECONNRESET, Errno::ECONNREFUSED, Errno::EHOSTUNREACH,
+         Net::OpenTimeout, Net::ReadTimeout, Gitlab::HTTP::BlockedUrlError, Gitlab::HTTP::RedirectionTooDeep,
+         Gitlab::Json::LimitedEncoder::LimitExceeded, URI::InvalidURIError => e
     execution_duration = Gitlab::Metrics::System.monotonic_time - start_time
     log_execution(
       trigger: hook_name,

doc/user/project/integrations/webhooks.md

@@ -6,7 +6,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Webhooks
 
-Project webhooks allow you to trigger a URL if for example new code is pushed or
+Project webhooks allow you to trigger a URL-encoded if for example new code is pushed or
 a new issue is created. You can configure webhooks to listen for specific events
 like pushes, issues or merge requests. GitLab sends a POST request with data
 to the webhook URL.

spec/services/web_hook_service_spec.rb

@@ -131,6 +131,15 @@ RSpec.describe WebHookService do
       end
     end
 
+    context 'when url is not encoded' do
+      let(:project_hook) { create(:project_hook, url: 'http://server.com/my path/') }
+
+      it 'handles exceptions' do
+        expect(service_instance.execute).to eq(status: :error, message: 'bad URI(is not URI?): "http://server.com/my path/"')
+        expect { service_instance.execute }.not_to raise_error
+      end
+    end
+
     context 'when request body size is too big' do
       it 'does not perform the request' do
         stub_const("#{described_class}::REQUEST_BODY_SIZE_LIMIT", 10.bytes)