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Notes to the Consolidated Statements of Financial Position (Details) - Schedule of Applicable Tax Rate and Current Income Taxes Recognized in Profit or Loss - EUR (€) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Applicable Tax Rate and Current Income Taxes Recognized in Profit or Loss [Abstract] |  |  |
Loss for the period (accounting profit before income tax) | € (42,667,529) | € (29,484,611) | € (45,630,059)
Tax rate | 28.60% | 29.20% | 28.50%
Tax benefits at tax rate | € 12,160,545 | € 8,610,381 | € 13,001,984
Temporary differences and tax losses for which no deferred tax asset was recognized | (12,127,977) | (7,480,169) | (10,988,805)
Non-recognition of tax effect on share-based payments | (32,182) | (1,251,830) | (1,959,606)
Non-deductible expenses for tax purposes | (46,907) | (22,067) | (3,758)
Other differences due to tax rate | 46,521 | 143,686 | (49,815)
Income tax |  |  |

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