Luci error after upgrade to 19.07.1

[shpokas]

Hi,
after upgrading to 19.07.1, Luci cannot display firewall traffic rules.
On Safari I get

#### TypeError
null is not an object (evaluating 'p[2]')

On Firefox

#### TypeError
p is null

How to debug this and find where Luci gets stuck?
Thanks,
shpokas

[jow]

Check your browser console and see if it prints a backtrace.

[shpokas]

Indeed. Thanks for the hint.
But it looks like Luci is trying to use something that does not exist in my router...

**NetworkError: "HTTP error 404 while loading class file "/luci-static/resources/protocol/grev6tap.js?v=git-20.062.72596-c7b5ee3"** at compileClass (https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108:3) "
raise https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:95
compileClass https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108
[luci.js:101:9](https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3)
**NetworkError: "HTTP error 404 while loading class file "/luci-static/resources/protocol/gretap.js?v=git-20.062.72596-c7b5ee3"** at compileClass (https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108:3) "
raise https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:95
compileClass https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108
[luci.js:101:9](https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3)
**NetworkError: "HTTP error 404 while loading class file "/luci-static/resources/protocol/grev6.js?v=git-20.062.72596-c7b5ee3"** at compileClass (https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108:3) "
raise https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:95
compileClass https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108
[luci.js:101:9](https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3)
**NetworkError: "HTTP error 404 while loading class file "/luci-static/resources/protocol/gre.js?v=git-20.062.72596-c7b5ee3"** at compileClass (https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108:3) "
raise https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:95
compileClass https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108
[luci.js:101:9](https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3)
**NetworkError: "HTTP error 404 while loading class file "/luci-static/resources/protocol/relay.js?v=git-20.062.72596-c7b5ee3"** at compileClass (https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108:3) "
raise https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:95
compileClass https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3:108
[luci.js:101:9](https://myrouter/luci-static/resources/luci.js?v=git-20.062.72596-c7b5ee3)

[jow]

That error is expected and harmless. Can you PM me your /etc/config/firewall file?

[shpokas]

Oh. Check PM, please.

[jow]

Thanks, that helped me to track down the root cause. The crash is triggered by option proto '0' in your "block ipad" rule. You cna replace it with option proto 'all' for the time being to avoid the problem.

[shpokas]

That helped! Had to replace "proto '0'" in two places.
Many thanks for your help! Much appreciated!