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Revenues, Deferred Revenues and Segments - Schedule of Revenues by Geographical Location (Details) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Schedule of Revenues by Geographical Location [Line Items] |  |  |
Total | € 4,484 | € 1,193 | € 311
Europe [Member] |  |  |
Schedule of Revenues by Geographical Location [Line Items] |  |  |
Total | 2,949 | 1,193 | 311
Other [Member] |  |  |
Schedule of Revenues by Geographical Location [Line Items] |  |  |
Total | € 1,535 |  |

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