erDiagram not showing attributes for entities

[squirrelslair]

Setup and configuration

• Mermaid version:3.0.1
• MediaWiki version:1.36.2
• PHP version:7.4.20 (cgi-fcgi)
• Database system (MySQL, PostgresQL, etc.) and version:MySQL 5.7.29-log

Issue

Using the car-driver sample code in https://mermaid-js.github.io/mermaid/#/entityRelationshipDiagram I get the car and driver entity boxes, but the attribute portion of the entities is not there.
Here is the code used:

An example is at
https://wiki.squirrelslair.ca/index.php?title=Mediawiki_Extension_Mermaid
It gives a console error Source map error: Error: request failed with status 404 Resource URL: https://wiki.squirrelslair.ca/load.php?lang=en&modules=ext.bootstrap.scripts%7Cext.mermaid%7Cjquery%2Csite%7Cjquery.client%7Cmediawiki.String%2CTitle%2Capi%2Cbase%2Ccldr%2CjqueryMsg%2Clanguage%2Cutil%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cuser.defaults&skin=chameleon&version=jiis4 Source Map URL: mermaid.min.js.map

The same example is at
https://sandbox.semantic-mediawiki.org/wiki/Utilisateur:Tenbergen/mermaid_ER_Diagram_attributes_not_shown
It gives a slightly different error: Source map error: Error: JSON.parse: unexpected character at line 1 column 1 of the JSON data Resource URL: https://sandbox.semantic-mediawiki.org/w/load.php?lang=en&modules=ext.echo.api%2Cinit%7Cext.mermaid%7Cext.scite.tooltip%7Cext.summary.cards%7Cext.summary.cards.tooltip%7Cext.uls.interface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Csite%7Cjquery.client%2Ccookie%2CtextSelection%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2CjqueryMsg%2Clanguage%2Cnotification%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.action.view.postEdit%7Cmediawiki.api.parse%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%2Cstartup%7Cmediawiki.page.watch.ajax%7Conoi.blobstore%2ClocalForage%2Cmd5%2Cqtip%2Cutil%7Conoi.qtip.extended%7Cskins.monobook.mobile%7Cskins.monobook.mobile.echohack%2Culs%7Cuser.defaults&skin=monobook&version=1x5xq Source Map URL: mermaid.min.js.map
The example in the sandbox also doesn't show the diagram after saving unless I refresh the page.

[kghbln]

Thanks for reporting.