Debt Financing (Details Narrative) - EUR (€) € in Thousands					1 Months Ended				9 Months Ended
	Aug. 15, 2021	Dec. 15, 2020	Jun. 01, 2018	Mar. 01, 2017	Apr. 30, 2022	Jun. 15, 2020	Dec. 20, 2019	Jun. 15, 2019	Sep. 30, 2022	Apr. 02, 2020
Debt Financing
Amortization installment description									A first amortization installment of €14 is due on October 3, 2022. The next amortization of €14 will be due on March 31, 2023. The entire loan should be fully amortized by September 30, 2027.
Debt instruments description	The promissory Notes of €960 and €240, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) December 31, 2021, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes.	The promissory Notes of €680 and €170, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) March 31, 2021, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes.	The first tranche of the promissory Notes of €640 and €160, respectively, were provided immediately. The second tranche of the promissory notes of €640 and €160, respectively, were provided on November 10, 2018, with a 2.5% interest per annum.	The first 50% of the promissory Notes of €920 and €230, respectively, were provided immediately. The second 50% of the promissory notes of €920 and €230, respectively, were provided on October 18, 2017, with a 2.5% interest per annum and a maturity date of October 18, 2018.	The first tranche of the promissory Notes of €480 and €120, respectively, were provided immediately. The second tranche of the promissory notes of €480 and €120, respectively, has been provided on August 15, 2022, with a 2.5% interest per annum.	The promissory Notes of €880 and €220, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) September 30, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes.	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) June 30, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes.	The promissory Notes of €480 and €120, respectively, were provided immediately. The maturity date of these promissory notes to follow the same terms of other convertible loans and is the later of (i) December 31, 2020, or (ii) the end of a subsequent calendar quarter in which the Company receives a written request from the lender for repayment of the unpaid principal and accrued interest due under the Notes.
Received from federal credit line										€ 156
Interest rate	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%
Promissory Notes Tranches 1			€ 1,280
Promissory Notes Tranches 2			€ 320
Promissory Notes	€ 1,200	€ 850				€ 1,100	€ 600	€ 600
Debt instrument face value 1									€ 190
Promissory Notes Round Enterprises					€ 960
Promissory Notes Eardley Holding AG					€ 240
Debt instrument face value 2									1,200
Debt instrument face value 3									€ 300
Description of conversion price									reducing by 10% the price per share of the Company’s common stock paid by the investors in connection with an investment in the Company of not less than US$20,000, or (ii) at the fixed conversion price using a fixed exchange rate which are noted in the table above.
Promissory Notes 1				€ 1,840
Promissory Notes 2				€ 460
Total loans and notes									€ 71,066