How to run unity webgl after packaging (Firefox configuration)

The following appears after packaging ：

Two of these folders are project resources , Only index.html It's opening Web Running pages

Use Firefox
Firefox browser

Firefox Please enter... In the address bar of the browser “about:config”, enter
In the filter （filter） Mid search “webgl”
take webgl.force-enabled Set to true
take webgl.disabled Set to false
In the filter （filter） Mid search “security.fileuri.strict_origin_policy”
take security.fileuri.strict_origin_policy Set to false
Close all currently open Firefox window , And then restart it Firefox.

The first two settings are forced on WebGL Support , the last one security.fileuri.strict_origin_policy The setting of is to allow resources to be loaded locally , If you're not WebGL The developer of the , No need for development debugging WebGL, I just want to have a look WebGL Of Demo, Then you don't have to set this .