EXHIBIT 99.1

JOINT FILING AGREEMENT

Each of the undersigned, pursuant to Rule 13d-1(k)(1) under the Act, hereby agrees and acknowledges that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the Class A Common Stock and the information required by this Schedule 13G, to which this Agreement is attached as an exhibit, is filed on behalf of them. The undersigned further agree that any further amendments or supplements thereto shall also be filed on behalf of each of them.

Dated: February 14, 2020

INDEX VENTURES VI (JERSEY) L.P.
By:		/s/ Sinead Meehan
		Name:		Sinead Meehan
		Title:		Director
INDEX VENTURES VI PARALLEL ENTREPRENEUR FUND (JERSEY) L.P.
By:		/s/ Sinead Meehan
		Name:		Sinead Meehan
		Title:		Director
INDEX VENTURE ASSOCIATES VI LIMITED
By:		/s/ Sinead Meehan
		Name:		Sinead Meehan
		Title:		Director
INDEX VENTURES GROWTH III (JERSEY) L.P.
By:		/s/ Sinead Meehan
		Name:		Sinead Meehan
		Title:		Director
INDEX VENTURE GROWTH ASSOCIATES III LIMITED
By:		/s/ Sinead Meehan
		Name:		Sinead Meehan
		Title:		Director
YUCCA (JERSEY) SLP
By:		Intertrust Employee Benefit Services Limited as authorized signatory of Yucca (Jersey) SLP in its capacity as an Administrator of the Index Co-Investment Scheme
By:		/s/ Alex di Santo
		Name:		Alex di Santo
		Title:		Authorized Signatory
By:		/s/ Sarah Earles
		Name:		Sarah Earles
		Title:		Authorized Signatory