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Summary of principal accounting policies (Details Narrative) - USD ($)
12 Months Ended
Dec. 31, 2021
Sep. 30, 2017
Dec. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Property, Plant and Equipment [Line Items]          
Goodwill and Intangible Asset Impairment   $ 3,009,732      
Finite-Lived Intangible Assets, Net  
Income Tax Examination, Likelihood of Unfavorable Settlement Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized        
Minimum [Member]          
Property, Plant and Equipment [Line Items]          
Finite-lived intangible asset, useful life 3 years        
Maximum [Member]          
Property, Plant and Equipment [Line Items]          
Finite-lived intangible asset, useful life 10 years