WebApp find and fix memory leak

Describe the bug When running the app for some time the memory increases and then the app crashes. This seamse to be related to Server Side Rendering where librarys or listeners are registered that are not cleaned up or not intended for use on the server.

In the nuxt.js issue thread below there is a hint to not use the created() hook but the beforeMounted() hook where possible (plus removing listeners etc.) to prevent behavior on the server and alternativly also set plugins to ssr: false where possible

https://github.com/nuxt/nuxt.js/issues/3465

To Reproduce Steps to reproduce the behavior:

Start application yarn dev or yarn build && yarn start
After running the app for some time you will see that the memory increases in a linear fashon
When a certain memory limit (system or node) is reached the app becomes unresponsive and then crashes

==== JS stack trace =========================================

Security context: 0x2e216fda5ee1 <JSObject>
    0: builtin exit frame: parse(this=0x2e216fd89041 <Object map = 0x257018382ba1>,0x289dd282201 <Very long string[392019]>)

    1: transformResponse(aka transformResponse) [/app/node_modules/axios/lib/defaults.js:~56] [pc=0x22fafc4eb551](this=0x4151f882311 <undefined>,data=0x289dd282201 <Very long string[392019]>)
    2: arguments adaptor frame: 2->1
    4: transform(aka transform) [/app/node_...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
 1: node::Abort() [node]
 2: 0x121a2cc [node]
 3: v8::Utils::ReportOOMFailure(char const*, bool) [node]
 4: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [node]
 5: v8::internal::Factory::NewFixedArray(int, v8::internal::PretenureFlag) [node]
 6: v8::internal::JsonParser<true>::ParseJsonArray() [node]
 7: v8::internal::JsonParser<true>::ParseJsonValue() [node]
 8: v8::internal::JsonParser<true>::ParseJsonObject() [node]
 9: v8::internal::JsonParser<true>::ParseJsonValue() [node]
10: v8::internal::JsonParser<true>::ParseJsonObject() [node]
11: v8::internal::JsonParser<true>::ParseJsonValue() [node]
12: v8::internal::JsonParser<true>::ParseJsonArray() [node]
13: v8::internal::JsonParser<true>::ParseJsonValue() [node]
14: v8::internal::JsonParser<true>::ParseJsonObject() [node]
15: v8::internal::JsonParser<true>::ParseJsonValue() [node]
16: v8::internal::JsonParser<true>::ParseJsonArray() [node]
17: v8::internal::JsonParser<true>::ParseJsonValue() [node]
18: v8::internal::JsonParser<true>::ParseJsonObject() [node]
19: v8::internal::JsonParser<true>::ParseJsonValue() [node]
20: v8::internal::JsonParser<true>::ParseJson() [node]
21: v8::internal::Builtin_JsonParse(int, v8::internal::Object**, v8::internal::Isolate*) [node]
22: 0x22fafb50441d
Aborted

Expected behavior Memory should not increase constantly and not crash after all