Registration not happening

[annlabsmumbai]

Elgg version
Which version of Elgg are you using : 5.1.12

Plugin version
Which version of the plugin are you using : 21.0.2

Plugin source

• Github releases download

Describe the bug
I added 3 profile type. Each profile type has a separate unique categories plus two common categories.
Profile-1, Profile-2, Profile-3.

Profile-1 categories

• About me
• Contact & links (one mandatory field and required in registration)
• Pro-1-cat (it has fileds, year1, location1 both mandatory and required in registration)

Profile-2 categories

• About me
• Contact & links (one mandatory field and required in registration)
• Pro-2-cat (it has fileds, year2, location2 both mandatory and required in registration)

Profile-3 categories

• About me
• Contact & links (one mandatory field and required in registration)
• Pro-3-cat (it has fileds, year3, location3 both mandatory and required in registration)

when one profile is selected corresponding Profile categories are loading -- perfect
but on click register button nothing happens.

To Reproduce
Steps to reproduce the behavior:
create as above

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Additional context
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