What causes "Internal Server Error" in Mintplex-Labs/anything-llm?

Check server logs for the underlying error from console.error(e).

Internal Server Error

Error message

Internal Server Error

What it means

Generic catch-all in the validateMemoryOwner middleware. It loads a memory by :memoryId scoped to the user's ID in multi-user mode. Memory.get has an internal try-catch returning null (which yields a 404), so this 500 fires only from userFromSession throwing unexpectedly or a Prisma client-level failure.

Source

Thrown at server/endpoints/memory.js:37

 * Loads the memory by :memoryId and, in multi-user mode, scopes the query to the requester's userId.
 * A memory owned by another user returns null here and is indistinguishable from "not found" — 404 either way.
 */
async function validateMemoryOwner(request, response, next) {
  try {
    const clause = { id: Number(request.params.memoryId) };
    if (response.locals.multiUserMode) {
      const user = await userFromSession(request, response);
      clause.userId = user?.id ?? null;
    }

    const memory = await Memory.get(clause);
    if (!memory)
      return response.status(404).json({ error: "Memory not found." });

    next();
  } catch (e) {
    console.error(e);
    return response.sendStatus(500);
  }
}

function memoryEndpoints(app) {
  if (!app) return;

  app.get(
    "/workspaces/:slug/memories",
    [
      validatedRequest,
      flexUserRoleValid([ROLES.all]),
      memoryFeatureEnabled,
      validWorkspaceSlug,
    ],
    async (request, response) => {
      try {
        const user = await userFromSession(request, response);
        const workspace = response.locals.workspace;

View on GitHub (pinned to 526360e320)

Solutions

Check server logs for the underlying error from console.error(e).
Verify JWT_SECRET is set and has not changed since the user's session token was issued.
Run npx prisma migrate deploy and npx prisma generate to ensure schema and client are in sync.
Confirm the memories table exists in the database.

Defensive patterns

Strategy: try-catch

Validate before calling

// Validate memoryId is numeric before DB lookup
const memoryId = Number(request.params.memoryId);
if (!Number.isInteger(memoryId) || memoryId <= 0) {
  return response.status(400).json({ error: "Invalid memory ID." });
}

Try / catch

// The middleware already has a catch; enhance error classification
catch (e) {
  console.error("validateMemoryOwner:", e);
  if (e?.code === "P2025" || e?.message?.includes("Prisma")) {
    return response.status(503).json({ error: "Database temporarily unavailable." });
  }
  return response.sendStatus(500);
}

Prevention

Ensure JWT_SECRET is stable across server restarts.
Run npx prisma generate after every schema change.
Monitor database connection pool metrics.

When it happens

Trigger: Hitting any /memories/:memoryId route when userFromSession encounters a corrupt JWT that bypasses decodeJWT's catch, or when the Prisma client is in a broken state such that Memory.get's internal catch itself fails.

Common situations: JWT_SECRET environment variable changed mid-session causing unexpected JWT behavior, Prisma client not generated or connected, or a schema mismatch after a migration that was not applied to the database.

Understand the failure class

HTTP status errors: handling 4xx and 5xx responses — how to handle 4xx and 5xx responses properly.

Related errors

AI-assisted analysis of Mintplex-Labs/anything-llm@526360e320 (2026-08-13). Data as JSON: /api/errors/b475fafe865cb039. Report an issue: GitHub.