Cannot send base64 images to Gemini in Mastra v1.0 Beta [Solved]

  "dependencies": {
    "@mastra/core": "1.0.0-beta.2",
    "@mastra/evals": "1.0.0-beta.0",
    "@mastra/libsql": "1.0.0-beta.0",
    "@mastra/loggers": "1.0.0-beta.0",
    "@mastra/memory": "1.0.0-beta.0",
    "@mastra/observability": "1.0.0-beta.0",
    "dotenv": "^17.2.3",
    "zod": "^4.1.12"
  },

  "dependencies": {
    "@mastra/core": "1.0.0-beta.2",
    "@mastra/evals": "1.0.0-beta.0",
    "@mastra/libsql": "1.0.0-beta.0",
    "@mastra/loggers": "1.0.0-beta.0",
    "@mastra/memory": "1.0.0-beta.0",
    "@mastra/observability": "1.0.0-beta.0",
    "dotenv": "^17.2.3",
    "zod": "^4.1.12"
  },

error: `Error: Invalid value at 'contents[0].parts[1].inline_data.data' (TYPE_BYTES), Base64 decoding failed for "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAACuAAAAdYCAYAAADLvJ3zAAAKsWlDQ1BJQ

error: `Error: Invalid value at 'contents[0].parts[1].inline_data.data' (TYPE_BYTES), Base64 decoding failed for "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAACuAAAAdYCAYAAADLvJ3zAAAKsWlDQ1BJQ

  execute: async ({ inputData, mastra }) => {
    const { screenshots } = inputData;

    const agent = mastra.getAgent("gameExtractorAgent");

    const imageParts: any[] = screenshots.map(({ base64, mimeType }) => ({
      type: "image",
      image: base64,
      mimeType,
    }));

    const justOneImage = imageParts.slice(0, 1);

    const content: any[] = [
      {
        type: "text",
        text: "Analyze these screenshots and extract all available statistics.",
      },
      // ...imageParts,
      ...justOneImage,
    ];

    const result = await agent.generate([{ role: "user", content }], {
      structuredOutput: {
        schema: gameStatsSchema,
      },
    });

  execute: async ({ inputData, mastra }) => {
    const { screenshots } = inputData;

    const agent = mastra.getAgent("gameExtractorAgent");

    const imageParts: any[] = screenshots.map(({ base64, mimeType }) => ({
      type: "image",
      image: base64,
      mimeType,
    }));

    const justOneImage = imageParts.slice(0, 1);

    const content: any[] = [
      {
        type: "text",
        text: "Analyze these screenshots and extract all available statistics.",
      },
      // ...imageParts,
      ...justOneImage,
    ];

    const result = await agent.generate([{ role: "user", content }], {
      structuredOutput: {
        schema: gameStatsSchema,
      },
    });