GameVersion:1.17.1
FabricVersion:0.11.6
ModVersion:1.5.0-1.17

Log:
[09:26:36] [main/INFO]: Loading for game Minecraft 1.17.1
[09:26:36] [main/FATAL]: A critical error occurred
net.fabricmc.loader.discovery.ModResolutionException: Could not find required mod: diggusmaximus requires {fabric @ [*]}
at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:198) ~[fabric-loader-0.11.6.jar:?]
at net.fabricmc.loader.discovery.ModResolver.resolve(ModResolver.java:832) ~[fabric-loader-0.11.6.jar:?]
at net.fabricmc.loader.FabricLoader.setup(FabricLoader.java:195) ~[fabric-loader-0.11.6.jar:?]
at net.fabricmc.loader.FabricLoader.load(FabricLoader.java:185) [fabric-loader-0.11.6.jar:?]
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:132) [fabric-loader-0.11.6.jar:?]
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:28) [fabric-loader-0.11.6.jar:?]
Caused by: net.fabricmc.loader.util.sat4j.specs.ContradictionException: Creating Empty clause ?
at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.propagationCheck(Clauses.java:117) ~[fabric-loader-sat4j-2.3.5.4.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.constraints.cnf.Clauses.sanityCheck(Clauses.java:97) ~[fabric-loader-sat4j-2.3.5.4.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.constraints.MixedDataStructureDanielWL.createClause(MixedDataStructureDanielWL.java:81) ~[fabric-loader-sat4j-2.3.5.4.jar:?]
at net.fabricmc.loader.util.sat4j.minisat.core.Solver.addClause(Solver.java:401) ~[fabric-loader-sat4j-2.3.5.4.jar:?]
at net.fabricmc.loader.discovery.ModResolver.findCompatibleSet(ModResolver.java:195) ~[fabric-loader-0.11.6.jar:?]
... 5 more

While i'm trying another modversion or fabricversion,the same erro ocured.

You must also install the separate mod for fabric "Fabric Api" you can find it on curseforge.

Thanks！