Ignore empty brain config

Author: hvarg

src/components/files/outputs/table.tsx

@@ -71,7 +71,7 @@ const renderOptionalButtons = (cur: TriggeredLineOfInquiry) => {
 
     return (<Fragment>
         {!!values['_SHINY_LOG_'] && (<ShinyModal shinyLog={values['_SHINY_LOG_']}/>)}
-        {!!values['_BRAIN_VISUALIZATION_'] && (<BrainModal brainCfg={values['_BRAIN_VISUALIZATION_']}/>)}
+        {!!values['_BRAIN_VISUALIZATION_'] && values['_BRAIN_VISUALIZATION_'] !== "[]\n" && (<BrainModal brainCfg={values['_BRAIN_VISUALIZATION_']}/>)}
     </Fragment>);
 }
 

src/components/modal/BrainModal.tsx

@@ -15,7 +15,7 @@ export const BrainModal = ({brainCfg: brainCfgTxt, iconOnly=true} : BrainModalPr
 
     useEffect(() => {
         if (brainCfgTxt && open) {
-            if (brainCfgTxt.startsWith('[')) {
+            if (brainCfgTxt !== "[]\n" && brainCfgTxt.startsWith('[')) {
                 let cfg: BrainCfgItem[] = JSON.parse(brainCfgTxt.replaceAll('\n', ' ').replaceAll('\t', ''));
                 setBrainCfg(cfg);
             } else {