[BUG] Unable to add new activities on most assets (500 Internal Server Error) and 404 on logos

**Bug Description**

For a few weeks now I'm unable to add/clone activities to my portfolio. It always says "Oops! Something went wrong. Please try again later."

Browser console shows this:

```
ERROR
Object { headers: {…}, status: 500, statusText: "Internal Server Error", url: "http://localhost:3333/api/v1/order", ok: false, type: undefined, name: "HttpErrorResponse", message: "Http failure response for http://localhost:3333/api/v1/order: 500 Internal Server Error", error: {…} }
​error: Object { statusCode: 500, message: "Internal server error" }
​​message: "Internal server error"
​​statusCode: 500
​​: Object { … }
​headers: Object { headers: undefined, normalizedNames: Map(0), lazyInit: lazyInit(), … }
​​headers: undefined
​​lazyInit: function lazyInit()
​​lazyUpdate: null
​​normalizedNames: Map(0)
​​: Object { … }
​message: "Http failure response for http://localhost:3333/api/v1/order: 500 Internal Server Error"
​name: "HttpErrorResponse"
​ok: false
​status: 500
​statusText: "Internal Server Error"
​type: undefined
​url: "http://localhost:3333/api/v1/order"
​: Object { … }
main.eea76ee8199852d2.js:3:114301
```
It's very odd, since a few assets work and most of them don't. The few that do still show a logo/icon in the portfolio overfiew, the ones that don't show a 404 while trying to load it (see screenshot below)

**To Reproduce**

1. Go to activities
2. Manually add isin or clone existing asset
3. Get error message

**Expected Behavior**

Successfully add new activities

**Screenshots**


**Logs**

Not sure which logs to attach, please advise

**Environment**

- Ghostfolio Version 2.164.0
- Self-hosted local docker instance
- Experimental Features: disabled
- Browser: Firefox 137
- OS: Ubuntu 24

**Additional Context**

Last activitiy I was able to add was a bit over a month ago, but I usually only do it once a month, so hard to pinpoint when it actually happened.