Getting "null pointer passed to rust" on Nextclade Web

[corneliusroemer]

Update: I can reproduce now with this: https://clades.nextstrain.org/?input-fasta=https%3A%2F%2Flapis-staging.pathoplexus.org%2Fmpox%2Fsample%2FunalignedNucleotideSequences%3FdownloadAsFile%3Dtrue%26downloadFileBasename%3Dmpox_nuc_2025-10-23T1220%26fastaHeaderTemplate%3D%257BdisplayName%257D%26versionStatus%3DLATEST_VERSION%26isRevocation%3Dfalse%26submittedAtTimestampFrom%3D1760918400%26clade%3DIIb%26sampleCollectionDateRangeLowerFrom%3D2025-03-01&dataset-name=nextstrain/mpox/all-clades

It works even in incognito Chrome window (on macOS)

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1. Go to this link: https://clades.nextstrain.org/?input-fasta=https%3A%2F%2Flapis-staging.pathoplexus.org%2Fmpox%2Fsample%2FunalignedNucleotideSequences%3FdownloadAsFile%3Dtrue%26downloadFileBasename%3Dmpox_nuc_2025-10-23T1215%26fastaHeaderTemplate%3D%257BdisplayName%257D%26versionStatus%3DLATEST_VERSION%26isRevocation%3Dfalse%26submittedAtTimestampFrom%3D1760918400%26clade%3DIIb%26clade%3DIb%26sampleCollectionDateRangeLowerFrom%3D2025-03-01&dataset-name=nextstrain/mpox/all-clades
2. While analysis is running, click on dataset at top left
3. Select the mpox clade I dataset
4. Wait for error(Probably not reproducible but this is what I did prior to it crashing).

Error message: Error: null pointer passed to rust

Nextclade version 3.18.0 (commit: cae18ab, branch: release)

Memory available: 3586 MBytes

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser details: {"browser":{"name":"Chrome","version":"141.0.0.0"},"os":{"name":"macOS","version":"10.15.7","versionName":"Catalina"},"platform":{"type":"desktop","vendor":"Apple"},"engine":{"name":"Blink"}}

Call stack:

Error: null pointer passed to rust
    at aa (https://clades.nextstrain.org/_next/static/chunks/src/workers/nextcladeWasm.worker.ts.8f55e4986dc84eea.js:1:13200)
    at https://clades.nextstrain.org/_next/static/wasm/5e2046ed225acfe1.wasm:wasm-function[4803]:0x41dd98
    at https://clades.nextstrain.org/_next/static/wasm/5e2046ed225acfe1.wasm:wasm-function[4804]:0x41dda5
    at https://clades.nextstrain.org/_next/static/wasm/5e2046ed225acfe1.wasm:wasm-function[2424]:0x3a00b6
    at e.value (https://clades.nextstrain.org/_next/static/chunks/src/workers/nextcladeWasm.worker.ts.8f55e4986dc84eea.js:1:4787)
    at https://clades.nextstrain.org/_next/static/chunks/src/workers/nextcladeWasm.worker.ts.8f55e4986dc84eea.js:1:20006
    at u (https://clades.nextstrain.org/_next/static/chunks/444.170c49d0571b2ba1.js:1:28086)
    at Generator._invoke (https://clades.nextstrain.org/_next/static/chunks/444.170c49d0571b2ba1.js:1:29376)
    at a.<computed> [as next] (https://clades.nextstrain.org/_next/static/chunks/444.170c49d0571b2ba1.js:1:28489)
    at p (https://clades.nextstrain.org/_next/static/chunks/src/workers/nextcladeWasm.worker.ts.8f55e4986dc84eea.js:1:17113)

Component stack:

N/A