When there is a popupTemplate at the last item of the sublayers (id: 1), the popup won't work and error will be thrown from init.js:2129.
No error when I remove the popupTemplate for sublayers id 1 only.
This only happen after we upgrade ArcGIS API for JavaScript from 4.14 to 4.15.
This is my sample code:
<SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">MapImageLayer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">{</SPAN>
url<SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'...'</SPAN><SPAN class="punctuation token">,</SPAN>
sublayers<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">[</SPAN>
<SPAN class="punctuation token">{</SPAN>
id<SPAN class="punctuation token">:</SPAN> <SPAN class="number token">3</SPAN><SPAN class="punctuation token">,</SPAN>
title<SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'A'</SPAN><SPAN class="punctuation token">,</SPAN>
popupTemplate<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">{</SPAN>
id<SPAN class="punctuation token">:</SPAN> <SPAN class="number token">2</SPAN><SPAN class="punctuation token">,</SPAN>
title<SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'B'</SPAN><SPAN class="punctuation token">,</SPAN>
popupTemplate<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">,</SPAN>
<SPAN class="punctuation token">{</SPAN>
id<SPAN class="punctuation token">:</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN>
title<SPAN class="punctuation token">:</SPAN> <SPAN class="string token">'C'</SPAN><SPAN class="punctuation token">,</SPAN>
popupTemplate<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">]</SPAN>
<SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
