feat: disable slider when no affiliate info

packages/website/ts/pages/instant/config_generator.tsx

@@ -79,6 +79,11 @@ export class ConfigGenerator extends React.Component<ConfigGeneratorProps, Confi
                     <FeePercentageSlider
                         value={value.affiliateInfo.feePercentage}
                         onChange={this._handleAffiliatePercentageChange}
+                        isDisabled={
+                            _.isUndefined(value.affiliateInfo) ||
+                            _.isUndefined(value.affiliateInfo.feeRecipient) ||
+                            _.isEmpty(value.affiliateInfo.feeRecipient)
+                        }
                     />
                 </ConfigGeneratorSection>
             </Container>

packages/website/ts/pages/instant/fee_percentage_slider.tsx

@@ -31,10 +31,14 @@ injectGlobal`
             margin-left: -60%;
         }
     }
+    .rc-slider-disabled {
+        background-color: inherit !important;
+    }
 `;
 
 export interface FeePercentageSliderProps {
     value: number;
+    isDisabled: boolean;
     onChange: (value: number) => void;
 }
 
@@ -42,6 +46,7 @@ export class FeePercentageSlider extends React.Component<FeePercentageSliderProp
     public render(): React.ReactNode {
         return (
             <SliderWithTooltip
+                disabled={this.props.isDisabled}
                 min={0}
                 max={0.05}
                 step={0.0025}