Solved Application error: a client-side exception has occurred

[JoeyB1]

I am receiving a message:

Application error: a client-side exception has occurred

on one site only, so far. I cleared cookies, no help. What is this and how do I clear it?

[JoeyB1]

I was told the web site has issues today. Thank you.

[DoctorG]

@joeyb1 Which Vivaldi version? Which Windows?
Is Vivaldi closing?
How does this message look like? Screenshot please.
And where does that happen? URL please.

Please check Troubleshooting issues.

[JoeyB1]

Vivaldi version 5.1.2597.39
Windows 10
It worked fine for years, including every day this week. I go there daily.

Blank white page with the message:

Application error: a client-side exception has occurred (developer guidance).

[DoctorG]

@joeyb1 5.1.2567.39!?

Please update to 5.1.2567.57.

I hope for you, you did not ran into a security hole/attack with your old Vivaldi version on such pages!

---

Application error: a client-side exception has occurred (developer guidance).

If this is shown on a website, some of your settings/extensions could cause this.
Or worse, a security hole crashing and infiltrating your PC.

I asked for a screenshot.

[JoeyB1]

I use AVG anti-virus

Again, it worked fine yesterday, and for years, since Opera, then Vivaldi.

My other banking sites work fine, it's this one only, so far.

[DoctorG]

@joeyb1

1. Update
2. Please check Troubleshooting issues

[DoctorG]

@esvb Your information is insufficient. No person can reproduce this at this time.

Please check Troubleshooting issues.

[DoctorG]

@joeyb1 Missing information how to reproduce.

[Pathduck]

@esvb said in Application error: a client-side exception has occurred:

I will not provide the name of the entity.

Then no-one will be able to help you. Since you're unable to troubleshoot the issue on your own, you will need help from people here who know how web sites work and can reproduce the problem. If no-one is able to reproduce the problem, it can be caused by anything, and we will get no further in trying helping you.

First step is you going through all the troubleshooting steps, which has already been posted here. Again, for your convenience:
https://help.vivaldi.com/desktop/troubleshoot/troubleshooting-issues/

[JoeyB1]

I was told the web site has issues today. Thank you.

[DoctorG]

@joeyb1 Ah, ok. No Vivaldi bug.
Thanks for information.