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Share-based payments (Details Narrative)
 6 Months Ended
Jun. 30, 2022
EUR (€)
€ / shares
shares
Statement [Line Items]  
Share options granted 1,362,500
Exercise price fair value | € / shares € 1.86
Share-based payment expense | € € 4,668
Expense for valuation of past grants | € € 651,000
Option 2016 Member  
Statement [Line Items]  
Share options 888,632
Option LTIP Member  
Statement [Line Items]  
Number of options to common shares 2,341,097
Exercise price | € / shares € 1.86
Share options 4,544,248